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package config
import (
"fmt"
"net"
"net/url"
"gopkg.in/yaml.v3"
)
type Url struct {
Scheme string `yaml:"scheme"`
User string `yaml:"user"`
Password string `yaml:"password"`
Host string `yaml:"host"`
Port string `yaml:"port"`
Root string `yaml:"root"`
}
func (u *Url) Empty() bool {
return u.Host == ""
}
func (u *Url) EmptyRoot() bool {
return u.Root == "" || u.Root == "/"
}
func (u *Url) UnmarshalYAML(value *yaml.Node) (err error) {
if value.ShortTag() == strTag {
var val string
var rawUrl *url.URL
if err = value.Decode(&val); err != nil {
return err
}
if rawUrl, err = url.Parse(val); err != nil {
return err
}
u.Scheme = rawUrl.Scheme
u.User = rawUrl.User.Username()
u.Password, _ = rawUrl.User.Password()
u.Host = rawUrl.Hostname()
u.Port = rawUrl.Port()
u.Root = rawUrl.Path
} else {
type _url Url // avoid recursion
wrapped := (*_url)(u)
if err = value.Decode(wrapped); err != nil {
return err
}
}
u.sanitize()
if errors := u.validate(); len(errors) > 0 {
errs := make([]string, len(errors)+1)
copy(errs[1:], errors)
errs[0] = fmt.Sprintf("line %d: Invalid target:", value.Line)
return &yaml.TypeError{Errors: errs}
}
return nil
}
func (u *Url) String() string {
scheme := u.Scheme + "://"
var pwd string
if u.Password != "" {
pwd = ":******"
}
var delim string
if pwd != "" || u.User != "" {
delim = "@"
}
return scheme + u.User + pwd + delim + u.HostPort() + u.Root
}
func (u *Url) HostPort() string {
if u.Port != "" {
return net.JoinHostPort(u.Host, u.Port)
}
return u.Host
}
const (
imapsPort = "993"
imapPort = "143"
imapsSchema = "imaps"
imapSchema = "imap"
)
func (u *Url) ForceTLS() bool {
return u.Scheme == imapsSchema || u.Port == imapsPort
}
func (u *Url) setDefaultScheme() {
if u.Scheme == "" {
if u.Port == imapsPort {
u.Scheme = imapsSchema
} else {
u.Scheme = imapSchema
}
}
}
func (u *Url) setDefaultPort() {
if u.Port == "" {
if u.Scheme == imapsSchema {
u.Port = imapsPort
} else {
u.Port = imapPort
}
}
}
func (u *Url) sanitize() {
u.setDefaultScheme()
u.setDefaultPort()
}
func (u *Url) validate() (errors []string) {
if u.Scheme != imapSchema && u.Scheme != imapsSchema {
errors = append(errors, fmt.Sprintf("Unknown scheme %q", u.Scheme))
}
if u.Host == "" {
errors = append(errors, "Host not set")
}
return
}
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