60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package httpRequest
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import (
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"io"
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"net/http"
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"strings"
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"go-socket/packages/config"
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)
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type postType uint8
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const (
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normal postType = iota
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file
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avatar
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profileBg
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)
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func validCheckWithResponseOnFail(response *http.ResponseWriter, request *http.Request, pt postType) bool {
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var maxSize int64
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switch pt {
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case file:
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maxSize = int64(config.MaxRequestWithFileBytes)
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case avatar:
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maxSize = int64(config.MaxRequestWithAvatarBytes)
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case profileBg:
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maxSize = int64(config.MaxRequestWithProfileBgBytes)
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default:
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maxSize = int64(config.MaxRequestBytes)
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}
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if request.ContentLength > maxSize {
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io.Copy(io.Discard, request.Body)
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http.Error(*response, "Request too large", http.StatusRequestEntityTooLarge)
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return false
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}
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return true
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}
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func isImage(r io.Reader) (bool, string, error) {
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buf := make([]byte, 512)
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n, err := io.ReadFull(r, buf)
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if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
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return false, "", err
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}
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contentType := http.DetectContentType(buf[:n])
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isImage := strings.HasPrefix(contentType, "image/") && contentType != "image/svg+xml"
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if seeker, ok := r.(io.Seeker); ok {
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if _, err := seeker.Seek(0, io.SeekStart); err != nil {
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return isImage, contentType, err
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}
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}
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return isImage, contentType, nil
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}
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