mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-11-30 00:21:36 +00:00
128 lines
3.4 KiB
Go
128 lines
3.4 KiB
Go
package helper
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import (
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"bytes"
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"fmt"
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"io"
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"net/http"
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"regexp"
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"strings"
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"time"
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"unicode/utf8"
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"github.com/42wim/matterbridge/bridge/config"
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log "github.com/sirupsen/logrus"
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)
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func DownloadFile(url string) (*[]byte, error) {
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return DownloadFileAuth(url, "")
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}
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func DownloadFileAuth(url string, auth string) (*[]byte, error) {
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var buf bytes.Buffer
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client := &http.Client{
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Timeout: time.Second * 5,
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}
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req, err := http.NewRequest("GET", url, nil)
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if auth != "" {
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req.Header.Add("Authorization", auth)
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}
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if err != nil {
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return nil, err
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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io.Copy(&buf, resp.Body)
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data := buf.Bytes()
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return &data, nil
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}
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func SplitStringLength(input string, length int) string {
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a := []rune(input)
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str := ""
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for i, r := range a {
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str = str + string(r)
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if i > 0 && (i+1)%length == 0 {
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str += "\n"
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}
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}
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return str
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}
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// handle all the stuff we put into extra
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func HandleExtra(msg *config.Message, general *config.Protocol) []config.Message {
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extra := msg.Extra
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rmsg := []config.Message{}
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for _, f := range extra[config.EVENT_FILE_FAILURE_SIZE] {
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fi := f.(config.FileInfo)
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text := fmt.Sprintf("file %s too big to download (%#v > allowed size: %#v)", fi.Name, fi.Size, general.MediaDownloadSize)
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rmsg = append(rmsg, config.Message{Text: text, Username: "<system> ", Channel: msg.Channel, Account: msg.Account})
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}
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return rmsg
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}
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func GetAvatar(av map[string]string, userid string, general *config.Protocol) string {
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if sha, ok := av[userid]; ok {
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return general.MediaServerDownload + "/" + sha + "/" + userid + ".png"
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}
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return ""
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}
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func HandleDownloadSize(flog *log.Entry, msg *config.Message, name string, size int64, general *config.Protocol) error {
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// check blacklist here
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for _, entry := range general.MediaDownloadBlackList {
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if entry != "" {
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re, err := regexp.Compile(entry)
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if err != nil {
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flog.Errorf("incorrect regexp %s for %s", entry, msg.Account)
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continue
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}
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if re.MatchString(name) {
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return fmt.Errorf("Matching blacklist %s. Not downloading %s", entry, name)
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}
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}
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}
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flog.Debugf("Trying to download %#v with size %#v", name, size)
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if int(size) > general.MediaDownloadSize {
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msg.Event = config.EVENT_FILE_FAILURE_SIZE
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msg.Extra[msg.Event] = append(msg.Extra[msg.Event], config.FileInfo{Name: name, Comment: msg.Text, Size: size})
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return fmt.Errorf("File %#v to large to download (%#v). MediaDownloadSize is %#v", name, size, general.MediaDownloadSize)
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}
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return nil
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}
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func HandleDownloadData(flog *log.Entry, msg *config.Message, name, comment, url string, data *[]byte, general *config.Protocol) {
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var avatar bool
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flog.Debugf("Download OK %#v %#v", name, len(*data))
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if msg.Event == config.EVENT_AVATAR_DOWNLOAD {
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avatar = true
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}
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msg.Extra["file"] = append(msg.Extra["file"], config.FileInfo{Name: name, Data: data, URL: url, Comment: comment, Avatar: avatar})
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}
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func RemoveEmptyNewLines(msg string) string {
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lines := ""
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for _, line := range strings.Split(msg, "\n") {
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if line != "" {
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lines += line + "\n"
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}
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}
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lines = strings.TrimRight(lines, "\n")
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return lines
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}
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func ClipMessage(text string, length int) string {
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// clip too long messages
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if len(text) > length {
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text = text[:length-len(" *message clipped*")]
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if r, size := utf8.DecodeLastRuneInString(text); r == utf8.RuneError {
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text = text[:len(text)-size]
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}
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text += " *message clipped*"
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}
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return text
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}
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