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feat: spf validation of sender addresses
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package service | ||
|
|
||
| import ( | ||
| "errors" | ||
| "github.com/mileusna/spf" | ||
| conf "github.com/muety/mailwhale/config" | ||
| "net" | ||
| "strings" | ||
| ) | ||
|
|
||
| type SpfService struct { | ||
| config *conf.Config | ||
| } | ||
|
|
||
| func NewSpfService() *SpfService { | ||
| return &SpfService{ | ||
| config: conf.Get(), | ||
| } | ||
| } | ||
|
|
||
| func (s *SpfService) Validate(senderAddress string) error { | ||
| if err := s.checkDelegate(senderAddress); err != nil { | ||
| if err := s.checkIp(senderAddress); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (s *SpfService) checkIp(senderAddress string) error { | ||
| domain := strings.Split(senderAddress, "@")[1] | ||
| for _, ip := range s.config.Mail.SPF.AuthorizedIPs { | ||
| if result := spf.CheckHost(net.ParseIP(ip), domain, senderAddress, ""); result == spf.Pass { | ||
| return nil | ||
| } | ||
| } | ||
| return errors.New("spf ip check did not pass") | ||
| } | ||
|
|
||
| func (s *SpfService) checkDelegate(senderAddress string) error { | ||
| domain := strings.Split(senderAddress, "@")[1] | ||
| spfRecord, result := spf.LookupSPF(domain) | ||
| if result == spf.None || result == spf.TempError || result == spf.PermError { | ||
| return errors.New("spf lookup failed") | ||
| } | ||
| for _, d := range s.config.Mail.SPF.AuthorizedDelegates { | ||
| if strings.Contains(spfRecord, "include:"+d) { | ||
| return nil | ||
| } | ||
| } | ||
| return errors.New("spf delegate check did not pass") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| 0.6.0 | ||
| 0.7.0 |
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