mirror of https://github.com/muety/wakapi.git
56 lines
931 B
Go
56 lines
931 B
Go
package main
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// Usage example:
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// cat emails.txt go run email_checker.go > result.txt
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import (
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"bufio"
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"fmt"
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"log"
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"net"
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"os"
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"regexp"
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"strings"
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)
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const MailPattern = "[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+"
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var mailRegex *regexp.Regexp
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func init() {
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mailRegex = regexp.MustCompile(MailPattern)
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}
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func CheckEmailMX(email string) bool {
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parts := strings.Split(email, "@")
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if len(parts) != 2 {
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return false
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}
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records, err := net.LookupMX(parts[1])
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return len(records) > 0 && err == nil
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}
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func ValidateEmail(email string) bool {
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return mailRegex.Match([]byte(email)) && CheckEmailMX(email)
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}
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func main() {
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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email := scanner.Text()
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if email == "" {
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return
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}
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if ValidateEmail(email) {
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fmt.Printf("[+] %s\n", email)
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} else {
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fmt.Printf("[-] %s\n", email)
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}
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}
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if err := scanner.Err(); err != nil {
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log.Fatal(err)
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}
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}
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