mirror of
https://github.com/mjl-/mox.git
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893a6f8911
we were already accepting, processing and displaying incoming tls reports. now we start tracking TLS connection and security-policy-related errors for outgoing message deliveries as well. we send reports once a day, to the reporting addresses specified in TLSRPT records (rua) of a policy domain. these reports are about MTA-STS policies and/or DANE policies, and about STARTTLS-related failures. sending reports is enabled by default, but can be disabled through setting NoOutgoingTLSReports in mox.conf. only at the end of the implementation process came the realization that the TLSRPT policy domain for DANE (MX) hosts are separate from the TLSRPT policy for the recipient domain, and that MTA-STS and DANE TLS/policy results are typically delivered in separate reports. so MX hosts need their own TLSRPT policies. config for the per-host TLSRPT policy should be added to mox.conf for existing installs, in field HostTLSRPT. it is automatically configured by quickstart for new installs. with a HostTLSRPT config, the "dns records" and "dns check" admin pages now suggest the per-host TLSRPT record. by creating that record, you're requesting TLS reports about your MX host. gathering all the TLS/policy results is somewhat tricky. the tentacles go throughout the code. the positive result is that the TLS/policy-related code had to be cleaned up a bit. for example, the smtpclient TLS modes now reflect reality better, with independent settings about whether PKIX and/or DANE verification has to be done, and/or whether verification errors have to be ignored (e.g. for tls-required: no header). also, cached mtasts policies of mode "none" are now cleaned up once the MTA-STS DNS record goes away.
399 lines
13 KiB
Go
399 lines
13 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/mjl-/bstore"
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"github.com/mjl-/sconf"
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"github.com/mjl-/mox/config"
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"github.com/mjl-/mox/dmarcdb"
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"github.com/mjl-/mox/dmarcrpt"
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"github.com/mjl-/mox/dns"
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"github.com/mjl-/mox/mlog"
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"github.com/mjl-/mox/mox-"
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"github.com/mjl-/mox/moxvar"
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"github.com/mjl-/mox/mtasts"
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"github.com/mjl-/mox/mtastsdb"
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"github.com/mjl-/mox/queue"
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"github.com/mjl-/mox/smtp"
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"github.com/mjl-/mox/store"
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"github.com/mjl-/mox/tlsrpt"
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"github.com/mjl-/mox/tlsrptdb"
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)
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func cmdGentestdata(c *cmd) {
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c.unlisted = true
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c.params = "dest-dir"
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c.help = `Generate a data directory populated, for testing upgrades.`
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args := c.Parse()
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if len(args) != 1 {
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c.Usage()
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}
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destDataDir, err := filepath.Abs(args[0])
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xcheckf(err, "making destination directory an absolute path")
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if _, err := os.Stat(destDataDir); err == nil {
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log.Fatalf("destination directory already exists, refusing to generate test data")
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}
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err = os.MkdirAll(destDataDir, 0770)
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xcheckf(err, "creating destination data directory")
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err = os.MkdirAll(filepath.Join(destDataDir, "tmp"), 0770)
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xcheckf(err, "creating tmp directory")
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tempfile := func() *os.File {
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f, err := os.CreateTemp(filepath.Join(destDataDir, "tmp"), "temp")
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xcheckf(err, "creating temp file")
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return f
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}
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log := mlog.New("gentestdata")
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ctxbg := context.Background()
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mox.Conf.Log[""] = mlog.LevelInfo
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mlog.SetConfig(mox.Conf.Log)
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const domainsConf = `
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Domains:
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mox.example: nil
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☺.example: nil
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Accounts:
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test0:
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Domain: mox.example
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Destinations:
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test0@mox.example: nil
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test1:
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Domain: mox.example
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Destinations:
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test1@mox.example: nil
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test2:
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Domain: ☺.example
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Destinations:
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☹@☺.example: nil
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JunkFilter:
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Threshold: 0.95
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Params:
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Twograms: true
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MaxPower: 0.1
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TopWords: 10
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IgnoreWords: 0.1
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`
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mox.ConfigStaticPath = filepath.FromSlash("/tmp/mox-bogus/mox.conf")
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mox.ConfigDynamicPath = filepath.FromSlash("/tmp/mox-bogus/domains.conf")
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mox.Conf.DynamicLastCheck = time.Now() // Should prevent warning.
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mox.Conf.Static = config.Static{
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DataDir: destDataDir,
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}
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err = sconf.Parse(strings.NewReader(domainsConf), &mox.Conf.Dynamic)
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xcheckf(err, "parsing domains config")
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const dmarcReport = `<?xml version="1.0" encoding="UTF-8" ?>
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<feedback>
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<report_metadata>
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<org_name>google.com</org_name>
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<email>noreply-dmarc-support@google.com</email>
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<extra_contact_info>https://support.google.com/a/answer/2466580</extra_contact_info>
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<report_id>10051505501689795560</report_id>
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<date_range>
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<begin>1596412800</begin>
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<end>1596499199</end>
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</date_range>
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</report_metadata>
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<policy_published>
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<domain>mox.example</domain>
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<adkim>r</adkim>
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<aspf>r</aspf>
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<p>reject</p>
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<sp>reject</sp>
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<pct>100</pct>
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</policy_published>
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<record>
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<row>
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<source_ip>127.0.0.1</source_ip>
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<count>1</count>
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<policy_evaluated>
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<disposition>none</disposition>
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<dkim>pass</dkim>
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<spf>pass</spf>
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</policy_evaluated>
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</row>
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<identifiers>
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<header_from>example.org</header_from>
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</identifiers>
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<auth_results>
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<dkim>
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<domain>example.org</domain>
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<result>pass</result>
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<selector>example</selector>
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</dkim>
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<spf>
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<domain>example.org</domain>
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<result>pass</result>
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</spf>
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</auth_results>
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</record>
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</feedback>
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`
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const tlsReport = `{
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"organization-name": "Company-X",
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"date-range": {
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"start-datetime": "2016-04-01T00:00:00Z",
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"end-datetime": "2016-04-01T23:59:59Z"
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},
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"contact-info": "sts-reporting@company-x.example",
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"report-id": "5065427c-23d3-47ca-b6e0-946ea0e8c4be",
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"policies": [{
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"policy": {
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"policy-type": "sts",
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"policy-string": ["version: STSv1","mode: testing",
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"mx: *.mail.company-y.example","max_age: 86400"],
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"policy-domain": "mox.example",
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"mx-host": ["*.mail.company-y.example"]
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},
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"summary": {
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"total-successful-session-count": 5326,
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"total-failure-session-count": 303
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},
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"failure-details": [{
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"result-type": "certificate-expired",
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"sending-mta-ip": "2001:db8:abcd:0012::1",
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"receiving-mx-hostname": "mx1.mail.company-y.example",
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"failed-session-count": 100
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}, {
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"result-type": "starttls-not-supported",
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"sending-mta-ip": "2001:db8:abcd:0013::1",
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"receiving-mx-hostname": "mx2.mail.company-y.example",
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"receiving-ip": "203.0.113.56",
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"failed-session-count": 200,
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"additional-information": "https://reports.company-x.example/report_info ? id = 5065427 c - 23 d3# StarttlsNotSupported "
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}, {
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"result-type": "validation-failure",
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"sending-mta-ip": "198.51.100.62",
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"receiving-ip": "203.0.113.58",
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"receiving-mx-hostname": "mx-backup.mail.company-y.example",
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"failed-session-count": 3,
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"failure-reason-code": "X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED"
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}]
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}]
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}`
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err = os.WriteFile(filepath.Join(destDataDir, "moxversion"), []byte(moxvar.Version), 0660)
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xcheckf(err, "writing moxversion")
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// Populate dmarc.db.
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err = dmarcdb.Init()
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xcheckf(err, "dmarcdb init")
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report, err := dmarcrpt.ParseReport(strings.NewReader(dmarcReport))
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xcheckf(err, "parsing dmarc aggregate report")
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err = dmarcdb.AddReport(ctxbg, report, dns.Domain{ASCII: "mox.example"})
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xcheckf(err, "adding dmarc aggregate report")
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// Populate mtasts.db.
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err = mtastsdb.Init(false)
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xcheckf(err, "mtastsdb init")
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mtastsPolicy := mtasts.Policy{
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Version: "STSv1",
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Mode: mtasts.ModeTesting,
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MX: []mtasts.STSMX{
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{Domain: dns.Domain{ASCII: "mx1.example.com"}},
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{Domain: dns.Domain{ASCII: "mx2.example.com"}},
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{Domain: dns.Domain{ASCII: "backup-example.com"}, Wildcard: true},
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},
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MaxAgeSeconds: 1296000,
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}
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err = mtastsdb.Upsert(ctxbg, dns.Domain{ASCII: "mox.example"}, "123", &mtastsPolicy, mtastsPolicy.String())
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xcheckf(err, "adding mtastsdb report")
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// Populate tlsrpt.db.
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err = tlsrptdb.Init()
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xcheckf(err, "tlsrptdb init")
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tlsr, err := tlsrpt.Parse(strings.NewReader(tlsReport))
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xcheckf(err, "parsing tls report")
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err = tlsrptdb.AddReport(ctxbg, dns.Domain{ASCII: "mox.example"}, "tlsrpt@mox.example", false, tlsr)
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xcheckf(err, "adding tls report")
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// Populate queue, with a message.
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err = queue.Init()
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xcheckf(err, "queue init")
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mailfrom := smtp.Path{Localpart: "other", IPDomain: dns.IPDomain{Domain: dns.Domain{ASCII: "other.example"}}}
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rcptto := smtp.Path{Localpart: "test0", IPDomain: dns.IPDomain{Domain: dns.Domain{ASCII: "mox.example"}}}
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prefix := []byte{}
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mf := tempfile()
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xcheckf(err, "temp file for queue message")
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defer os.Remove(mf.Name())
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defer mf.Close()
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const qmsg = "From: <test0@mox.example>\r\nTo: <other@remote.example>\r\nSubject: test\r\n\r\nthe message...\r\n"
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_, err = fmt.Fprint(mf, qmsg)
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xcheckf(err, "writing message")
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qm := queue.MakeMsg("test0", mailfrom, rcptto, false, false, int64(len(qmsg)), "<test@localhost>", prefix, nil)
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err = queue.Add(ctxbg, log, &qm, mf)
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xcheckf(err, "enqueue message")
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// Create three accounts.
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// First account without messages.
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accTest0, err := store.OpenAccount("test0")
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xcheckf(err, "open account test0")
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err = accTest0.ThreadingWait(log)
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xcheckf(err, "wait for threading to finish")
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err = accTest0.Close()
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xcheckf(err, "close account")
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// Second account with one message.
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accTest1, err := store.OpenAccount("test1")
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xcheckf(err, "open account test1")
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err = accTest1.ThreadingWait(log)
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xcheckf(err, "wait for threading to finish")
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err = accTest1.DB.Write(ctxbg, func(tx *bstore.Tx) error {
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inbox, err := bstore.QueryTx[store.Mailbox](tx).FilterNonzero(store.Mailbox{Name: "Inbox"}).Get()
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xcheckf(err, "looking up inbox")
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const msg = "From: <other@remote.example>\r\nTo: <test1@mox.example>\r\nSubject: test\r\n\r\nthe message...\r\n"
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m := store.Message{
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MailboxID: inbox.ID,
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MailboxOrigID: inbox.ID,
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MailboxDestinedID: inbox.ID,
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RemoteIP: "1.2.3.4",
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RemoteIPMasked1: "1.2.3.4",
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RemoteIPMasked2: "1.2.3.0",
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RemoteIPMasked3: "1.2.0.0",
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EHLODomain: "other.example",
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MailFrom: "other@remote.example",
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MailFromLocalpart: smtp.Localpart("other"),
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MailFromDomain: "remote.example",
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RcptToLocalpart: "test1",
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RcptToDomain: "mox.example",
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MsgFromLocalpart: "other",
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MsgFromDomain: "remote.example",
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MsgFromOrgDomain: "remote.example",
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EHLOValidated: true,
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MailFromValidated: true,
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MsgFromValidated: true,
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EHLOValidation: store.ValidationStrict,
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MailFromValidation: store.ValidationPass,
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MsgFromValidation: store.ValidationStrict,
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DKIMDomains: []string{"other.example"},
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Size: int64(len(msg)),
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}
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mf := tempfile()
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xcheckf(err, "creating temp file for delivery")
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_, err = fmt.Fprint(mf, msg)
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xcheckf(err, "writing deliver message to file")
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err = accTest1.DeliverMessage(log, tx, &m, mf, false, true, false)
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mfname := mf.Name()
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xcheckf(err, "add message to account test1")
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err = mf.Close()
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xcheckf(err, "closing file")
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err = os.Remove(mfname)
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xcheckf(err, "removing temp message file")
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err = tx.Get(&inbox)
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xcheckf(err, "get inbox")
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inbox.Add(m.MailboxCounts())
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err = tx.Update(&inbox)
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xcheckf(err, "update inbox")
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return nil
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})
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xcheckf(err, "write transaction with new message")
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err = accTest1.Close()
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xcheckf(err, "close account")
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// Third account with two messages and junkfilter.
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accTest2, err := store.OpenAccount("test2")
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xcheckf(err, "open account test2")
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err = accTest2.ThreadingWait(log)
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xcheckf(err, "wait for threading to finish")
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err = accTest2.DB.Write(ctxbg, func(tx *bstore.Tx) error {
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inbox, err := bstore.QueryTx[store.Mailbox](tx).FilterNonzero(store.Mailbox{Name: "Inbox"}).Get()
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xcheckf(err, "looking up inbox")
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const msg0 = "From: <other@remote.example>\r\nTo: <☹@xn--74h.example>\r\nSubject: test\r\n\r\nthe message...\r\n"
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m0 := store.Message{
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MailboxID: inbox.ID,
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MailboxOrigID: inbox.ID,
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MailboxDestinedID: inbox.ID,
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RemoteIP: "::1",
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RemoteIPMasked1: "::",
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RemoteIPMasked2: "::",
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RemoteIPMasked3: "::",
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EHLODomain: "other.example",
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MailFrom: "other@remote.example",
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MailFromLocalpart: smtp.Localpart("other"),
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MailFromDomain: "remote.example",
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RcptToLocalpart: "☹",
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RcptToDomain: "☺.example",
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MsgFromLocalpart: "other",
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MsgFromDomain: "remote.example",
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MsgFromOrgDomain: "remote.example",
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EHLOValidated: true,
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MailFromValidated: true,
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MsgFromValidated: true,
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EHLOValidation: store.ValidationStrict,
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MailFromValidation: store.ValidationPass,
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MsgFromValidation: store.ValidationStrict,
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DKIMDomains: []string{"other.example"},
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Size: int64(len(msg0)),
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}
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mf0 := tempfile()
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xcheckf(err, "creating temp file for delivery")
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_, err = fmt.Fprint(mf0, msg0)
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xcheckf(err, "writing deliver message to file")
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err = accTest2.DeliverMessage(log, tx, &m0, mf0, false, false, false)
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xcheckf(err, "add message to account test2")
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mf0name := mf0.Name()
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err = mf0.Close()
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xcheckf(err, "closing file")
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err = os.Remove(mf0name)
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xcheckf(err, "removing temp message file")
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err = tx.Get(&inbox)
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xcheckf(err, "get inbox")
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inbox.Add(m0.MailboxCounts())
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err = tx.Update(&inbox)
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xcheckf(err, "update inbox")
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sent, err := bstore.QueryTx[store.Mailbox](tx).FilterNonzero(store.Mailbox{Name: "Sent"}).Get()
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xcheckf(err, "looking up inbox")
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const prefix1 = "Extra: test\r\n"
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const msg1 = "From: <other@remote.example>\r\nTo: <☹@xn--74h.example>\r\nSubject: test\r\n\r\nthe message...\r\n"
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m1 := store.Message{
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MailboxID: sent.ID,
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MailboxOrigID: sent.ID,
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MailboxDestinedID: sent.ID,
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Flags: store.Flags{Seen: true, Junk: true},
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Size: int64(len(prefix1) + len(msg1)),
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MsgPrefix: []byte(prefix1),
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}
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mf1 := tempfile()
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xcheckf(err, "creating temp file for delivery")
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_, err = fmt.Fprint(mf1, msg1)
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xcheckf(err, "writing deliver message to file")
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err = accTest2.DeliverMessage(log, tx, &m1, mf1, false, false, false)
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xcheckf(err, "add message to account test2")
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mf1name := mf1.Name()
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err = mf1.Close()
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xcheckf(err, "closing file")
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err = os.Remove(mf1name)
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xcheckf(err, "removing temp message file")
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err = tx.Get(&sent)
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xcheckf(err, "get sent")
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sent.Add(m1.MailboxCounts())
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err = tx.Update(&sent)
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xcheckf(err, "update sent")
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return nil
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})
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xcheckf(err, "write transaction with new message")
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err = accTest2.Close()
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xcheckf(err, "close account")
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}
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