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34 lines
791 B
Go
34 lines
791 B
Go
package cdn
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import (
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"crypto/md5"
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"fmt"
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"net/url"
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"time"
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)
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// CreateTimestampAntileechURL 用来构建七牛CDN时间戳防盗链的访问链接
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func CreateTimestampAntileechURL(urlStr string, encryptKey string,
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durationInSeconds int64) (antileechURL string, err error) {
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u, err := url.Parse(urlStr)
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if err != nil {
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return
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}
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expireTime := time.Now().Add(time.Second * time.Duration(durationInSeconds)).Unix()
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toSignStr := fmt.Sprintf("%s%s%x", encryptKey, u.EscapedPath(), expireTime)
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signedStr := fmt.Sprintf("%x", md5.Sum([]byte(toSignStr)))
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q := url.Values{}
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q.Add("sign", signedStr)
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q.Add("t", fmt.Sprintf("%x", expireTime))
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if u.RawQuery == "" {
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antileechURL = u.String() + "?" + q.Encode()
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} else {
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antileechURL = u.String() + "&" + q.Encode()
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}
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return
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}
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