kopia lustrzana https://github.com/productionwentdown/email-collector.git
Initial commit
commit
037cdfe7b6
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pipeline:
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docker:
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image: plugins/docker
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registry: registry.labs.0x.no
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repo: registry.labs.0x.no/email-collector
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tags:
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- latest
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email-collector
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FROM golang:1.10-alpine as go
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WORKDIR /go/src/email-collector
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COPY . .
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ENV CGO_ENABLED=0
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ENV GOOS=linux
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ENV GOARCH=amd64
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RUN go build -ldflags '-extldflags "-static"' -o email-collector
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FROM scratch
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EXPOSE 8080
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COPY --from=go /go/src/email-collector/email-collector email-collector
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ENTRYPOINT ["/email-collector"]
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MIT License
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Copyright (c) 2017 Ambrose Chua
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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# email-collector
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A simple email collector
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package checkmail
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import (
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"errors"
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"fmt"
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"net"
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"net/smtp"
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"regexp"
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"strings"
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"time"
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)
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type SmtpError struct {
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Err error
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}
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func (e SmtpError) Error() string {
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return e.Err.Error()
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}
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func (e SmtpError) Code() string {
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return e.Err.Error()[0:3]
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}
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func NewSmtpError(err error) SmtpError {
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return SmtpError{
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Err: err,
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}
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}
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const forceDisconnectAfter = time.Second * 10
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var (
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ErrBadFormat = errors.New("invalid format")
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ErrUnresolvableHost = errors.New("unresolvable host")
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//emailRegexp = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
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emailRegexp = regexp.MustCompile("^.+?@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
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)
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func ValidateFormat(email string) error {
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if !emailRegexp.MatchString(email) {
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return ErrBadFormat
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}
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return nil
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}
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func ValidateHost(email string) error {
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_, host := split(email)
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mx, err := net.LookupMX(host)
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if err != nil {
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return ErrUnresolvableHost
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}
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client, err := smtp.Dial(fmt.Sprintf("%s:%d", mx[0].Host, 25))
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if err != nil {
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return NewSmtpError(err)
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}
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defer client.Close()
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t := time.AfterFunc(forceDisconnectAfter, func() { client.Close() })
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defer t.Stop()
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err = client.Hello("checkmail.me")
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if err != nil {
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return NewSmtpError(err)
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}
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err = client.Mail("lansome-cowboy@gmail.com")
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if err != nil {
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return NewSmtpError(err)
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}
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err = client.Rcpt(email)
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if err != nil {
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return NewSmtpError(err)
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}
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return nil
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}
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func split(email string) (account, host string) {
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i := strings.LastIndexByte(email, '@')
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account = email[:i]
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host = email[i+1:]
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return
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}
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package checkmail_test
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import (
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"testing"
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"github.com/badoux/checkmail"
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)
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var (
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samples = []struct {
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mail string
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format bool
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account bool //host+user
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}{
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{mail: "florian@carrere.cc", format: true, account: true},
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{mail: " florian@carrere.cc", format: false, account: false},
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{mail: "florian@carrere.cc ", format: false, account: false},
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{mail: "test@912-wrong-domain902.com", format: true, account: false},
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{mail: "0932910-qsdcqozuioqkdmqpeidj8793@gmail.com", format: true, account: false},
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{mail: "@gmail.com", format: false, account: false},
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{mail: "test@gmail@gmail.com", format: false, account: false},
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{mail: "test test@gmail.com", format: false, account: false},
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{mail: " test@gmail.com", format: false, account: false},
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{mail: "test@wrong domain.com", format: false, account: false},
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{mail: "é&ààà@gmail.com", format: false, account: false},
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{mail: "admin@jalopyjournal.com", format: true, account: true},
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{mail: "admin@busyboo.com", format: true, account: true},
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{mail: "a@gmail.fi", format: true, account: false},
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}
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)
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func TestValidateHost(t *testing.T) {
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for _, s := range samples {
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if !s.format {
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continue
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}
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err := checkmail.ValidateHost(s.mail)
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if err != nil && s.account == true {
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t.Errorf(`"%s" => unexpected error: "%v"`, s.mail, err)
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}
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if err == nil && s.account == false {
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t.Errorf(`"%s" => expected error`, s.mail)
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}
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}
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}
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func TestValidateFormat(t *testing.T) {
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for _, s := range samples {
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err := checkmail.ValidateFormat(s.mail)
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if err != nil && s.format == true {
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t.Errorf(`"%s" => unexpected error: "%v"`, s.mail, err)
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}
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if err == nil && s.format == false {
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t.Errorf(`"%s" => expected error`, s.mail)
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}
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}
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}
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package main // import "github.com/productionwentdown/email-collector"
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import (
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"encoding/csv"
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"log"
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"net/http"
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"os"
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"sync"
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"time"
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// modified from @badoux's checkmail
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"github.com/productionwentdown/email-collector/checkmail"
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)
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func main() {
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csvMutex := &sync.Mutex{}
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csvFile, err := os.OpenFile("list.csv", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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defer csvFile.Close()
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if err != nil {
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log.Fatal(err)
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}
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csvWriter := csv.NewWriter(csvFile)
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http.HandleFunc("/subscribe", func(w http.ResponseWriter, r *http.Request) {
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err := r.ParseForm()
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if err != nil {
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log.Println(err)
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w.WriteHeader(400)
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w.Write([]byte("An error occurred. Please try again"))
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return
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}
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email := r.Form.Get("email")
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if err := checkmail.ValidateFormat(email); err != nil {
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log.Println(email, err)
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w.WriteHeader(400)
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w.Write([]byte("Email is not valid"))
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return
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}
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err = checkmail.ValidateHost(email)
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if _, ok := err.(checkmail.SmtpError); !ok && err != nil {
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log.Println(email, err)
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w.WriteHeader(400)
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w.Write([]byte("Email is not valid"))
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return
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}
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log.Println(email, "success")
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csvMutex.Lock()
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csvWriter.Write([]string{email, time.Now().String()})
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csvWriter.Flush()
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csvMutex.Unlock()
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w.Header().Add("Location", "/subscribed")
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w.WriteHeader(303)
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})
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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@ -0,0 +1 @@
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module github.com/productionwentdown/email-collector
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@ -0,0 +1,4 @@
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ambrose.chua.cm@gmail.com,2018-07-01 15:44:58.882682933 +0800 +08 m=+6.293630824
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||||
ambrose.chua.cm@gmail.com,2018-07-01 15:45:54.537033441 +0800 +08 m=+2.937844629
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ambrose.chua.cm@gmail.com,2018-07-01 15:45:59.691625135 +0800 +08 m=+8.092381750
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ambrose.chua.cm@gmail.com,2018-07-01 15:46:06.580296689 +0800 +08 m=+2.869616704
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Ładowanie…
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