64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
package xmpp // import "gosrc.io/xmpp"
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import (
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"errors"
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"strings"
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"unicode"
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)
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type Jid struct {
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username string
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domain string
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resource string
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}
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func NewJid(sjid string) (*Jid, error) {
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s1 := strings.SplitN(sjid, "@", 2)
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if len(s1) != 2 {
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return nil, errors.New("invalid JID, missing domain: " + sjid)
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}
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jid := new(Jid)
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jid.username = s1[0]
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if !isUsernameValid(jid.username) {
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return jid, errors.New("invalid domain: " + jid.username)
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}
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s2 := strings.SplitN(s1[1], "/", 2)
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jid.domain = s2[0]
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if !isDomainValid(jid.domain) {
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return jid, errors.New("invalid domain: " + jid.domain)
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}
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if len(s2) == 2 {
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jid.resource = s2[1]
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}
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return jid, nil
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}
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func isUsernameValid(username string) bool {
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invalidRunes := []rune{'@', '/', '\'', '"', ':', '<', '>'}
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return strings.IndexFunc(username, isInvalid(invalidRunes)) < 0
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}
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func isDomainValid(domain string) bool {
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invalidRunes := []rune{'@', '/'}
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return strings.IndexFunc(domain, isInvalid(invalidRunes)) < 0
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}
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func isInvalid(invalidRunes []rune) func(c rune) bool {
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isInvalid := func(c rune) bool {
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if unicode.IsSpace(c) {
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return true
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}
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for _, r := range invalidRunes {
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if c == r {
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return true
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}
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}
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return false
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}
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return isInvalid
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}
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