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package tools
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import (
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"bytes"
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"fmt"
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"github.com/axgle/mahonia"
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"github.com/emersion/go-imap"
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"github.com/emersion/go-imap/client"
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"io"
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"io/ioutil"
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"log"
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"mime"
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"strconv"
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"strings"
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)
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//验证邮箱密码
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func CheckEmailPassword(server string, email string, password string) bool {
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if !strings.Contains(server, ":") {
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return false
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}
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var c *client.Client
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serverSlice := strings.Split(server, ":")
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port, _ := strconv.Atoi(serverSlice[1])
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if port != 993 && port != 143 {
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return false
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}
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// 不要忘了退出
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//defer c.Logout()
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// 登陆
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c=connect(server,email,password)
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if c==nil{
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return false
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}
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return true
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}
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//获取连接
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func connect(server string, email string, password string)*client.Client{
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var c *client.Client
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var err error
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serverSlice := strings.Split(server, ":")
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uri := serverSlice[0]
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port, _ := strconv.Atoi(serverSlice[1])
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if port != 993 && port != 143 {
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return nil
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}
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if port == 993 {
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c, err = client.DialTLS(fmt.Sprintf("%s:%d", uri, port), nil)
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} else {
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c, err = client.Dial(fmt.Sprintf("%s:%d", uri, port))
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}
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if err != nil {
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return nil
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}
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// 登陆
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if err := c.Login(email, password); err != nil {
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return nil
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}
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return c
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}
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//获取邮件夹
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func GetFolders(server string, email string, password string,folder string)map[string]int{
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var c *client.Client
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//defer c.Logout()
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c=connect(server,email,password)
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if c==nil{
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return nil
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}
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// 列邮箱
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mailboxes := make(chan *imap.MailboxInfo, 10)
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done := make(chan error, 1)
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go func() {
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done <- c.List("", "*", mailboxes)
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}()
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// 存储邮件夹
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var folders =make(map[string]int)
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for m := range mailboxes {
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folders[m.Name]=0
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}
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for m,_ := range folders {
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if m==folder {
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mbox, _ := c.Select(m, true)
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if mbox != nil {
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folders[m] = int(mbox.Messages)
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}
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break
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}
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}
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log.Println(folders)
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return folders
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}
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//获取邮件夹邮件
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func GetFolderMail(server string, email string, password string,folder string,currentPage int,pagesize int)[]string{
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var c *client.Client
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//defer c.Logout()
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c=connect(server,email,password)
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if c==nil{
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return nil
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}
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mbox, _ := c.Select(folder, true)
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to := mbox.Messages-uint32((currentPage-1)*pagesize)
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from := to-uint32(pagesize)
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if to <=uint32(pagesize){
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from=1
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}
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seqset := new(imap.SeqSet)
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seqset.AddRange(from, to)
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messages := make(chan *imap.Message, pagesize)
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done := make(chan error, 1)
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go func() {
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done <- c.Fetch(seqset, []imap.FetchItem{imap.FetchEnvelope}, messages)
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}()
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var res []string
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dec :=new(mime.WordDecoder)
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dec.CharsetReader= func(charset string, input io.Reader) (io.Reader, error) {
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switch charset {
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case "gb2312":
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content, err := ioutil.ReadAll(input)
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if err != nil {
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return nil, err
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}
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//ret:=bytes.NewReader(content)
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//ret:=transform.NewReader(bytes.NewReader(content), simplifiedchinese.HZGB2312.NewEncoder())
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utf8str:=ConvertToStr(string(content),"gbk","utf-8")
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t:=bytes.NewReader([]byte(utf8str))
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//ret:=utf8.DecodeRune(t)
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//log.Println(ret)
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return t, nil
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case "gbk":
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content, err := ioutil.ReadAll(input)
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if err != nil {
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return nil, err
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}
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//ret:=bytes.NewReader(content)
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//ret:=transform.NewReader(bytes.NewReader(content), simplifiedchinese.HZGB2312.NewEncoder())
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utf8str:=ConvertToStr(string(content),"gbk","utf-8")
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t:=bytes.NewReader([]byte(utf8str))
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//ret:=utf8.DecodeRune(t)
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//log.Println(ret)
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return t, nil
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case "gb18030":
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content, err := ioutil.ReadAll(input)
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if err != nil {
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return nil, err
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}
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//ret:=bytes.NewReader(content)
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//ret:=transform.NewReader(bytes.NewReader(content), simplifiedchinese.HZGB2312.NewEncoder())
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utf8str:=ConvertToStr(string(content),"gbk","utf-8")
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t:=bytes.NewReader([]byte(utf8str))
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//ret:=utf8.DecodeRune(t)
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//log.Println(ret)
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return t, nil
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default:
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return nil,fmt.Errorf("unhandle charset:%s",charset)
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}
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}
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for msg:=range messages{
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ret,err:=dec.Decode(msg.Envelope.Subject)
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if err!=nil{
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ret,_=dec.DecodeHeader(msg.Envelope.Subject)
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}
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res=append(res,ret)
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}
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log.Println(res)
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return res
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}
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// 任意编码转特定编码
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func ConvertToStr(src string, srcCode string, tagCode string) string {
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srcCoder := mahonia.NewDecoder(srcCode)
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srcResult := srcCoder.ConvertString(src)
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tagCoder := mahonia.NewDecoder(tagCode)
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_, cdata, _ := tagCoder.Translate([]byte(srcResult), true)
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result := string(cdata)
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return result
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}
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