75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
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package bfs
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import (
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"context"
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"crypto/hmac"
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"crypto/sha1"
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"encoding/base64"
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"fmt"
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"hash"
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"io"
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"net/http"
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"strconv"
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"github.com/pkg/errors"
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)
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const (
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_uploadURL = "/bfs/%s/%s"
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_template = "%s\n%s\n%s\n%d\n"
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_method = "PUT"
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)
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// Upload upload picture or log file to bfs
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func (d *Dao) Upload(c context.Context, fileName, fileType string, expire int64, body io.Reader) (location string, err error) {
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var (
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url string
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req *http.Request
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resp *http.Response
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code int
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)
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client := &http.Client{}
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url = fmt.Sprintf(d.bfs+_uploadURL, d.bucket, fileName)
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if req, err = http.NewRequest(_method, url, body); err != nil {
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err = errors.Errorf("http.NewRequest(url(%s), body(%+v)) error(%+v)", url, body, err)
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return
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}
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authorization := authorize(d.key, d.secret, _method, d.bucket, fileName, expire)
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req.Header.Set("Host", d.bfs)
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req.Header.Add("Date", fmt.Sprint(expire))
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req.Header.Add("Authorization", authorization)
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req.Header.Add("Content-Type", fileType)
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resp, err = client.Do(req)
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if err != nil {
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err = errors.Errorf("resp.Do(%s) error(%+v)", url, err)
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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err = errors.Errorf("status code(%d) error(%+v)", resp.StatusCode, err)
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return
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}
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code, err = strconv.Atoi(resp.Header.Get("code"))
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if err != nil || code != http.StatusOK {
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err = errors.Errorf("response code(%d) error(%+v)", resp.StatusCode, err)
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return
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}
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location = resp.Header.Get("Location")
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return
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}
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// Authorize returns authorization for upload file to bfs
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func authorize(key, secret, method, bucket, file string, expire int64) (authorization string) {
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var (
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content string
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mac hash.Hash
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signature string
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)
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content = fmt.Sprintf(_template, method, bucket, file, expire)
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mac = hmac.New(sha1.New, []byte(secret))
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mac.Write([]byte(content))
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signature = base64.StdEncoding.EncodeToString(mac.Sum(nil))
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authorization = fmt.Sprintf("%s:%s:%d", key, signature, expire)
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return
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}
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