45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package s3
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import (
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"crypto/md5"
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"encoding/base64"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/aws/awsutil"
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"github.com/aws/aws-sdk-go/aws/request"
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)
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var errSSERequiresSSL = awserr.New("ConfigError", "cannot send SSE keys over HTTP.", nil)
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func validateSSERequiresSSL(r *request.Request) {
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if r.HTTPRequest.URL.Scheme != "https" {
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p, _ := awsutil.ValuesAtPath(r.Params, "SSECustomerKey||CopySourceSSECustomerKey")
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if len(p) > 0 {
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r.Error = errSSERequiresSSL
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}
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}
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}
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func computeSSEKeys(r *request.Request) {
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headers := []string{
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"x-amz-server-side-encryption-customer-key",
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"x-amz-copy-source-server-side-encryption-customer-key",
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}
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for _, h := range headers {
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md5h := h + "-md5"
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if key := r.HTTPRequest.Header.Get(h); key != "" {
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// Base64-encode the value
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b64v := base64.StdEncoding.EncodeToString([]byte(key))
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r.HTTPRequest.Header.Set(h, b64v)
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// Add MD5 if it wasn't computed
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if r.HTTPRequest.Header.Get(md5h) == "" {
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sum := md5.Sum([]byte(key))
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b64sum := base64.StdEncoding.EncodeToString(sum[:])
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r.HTTPRequest.Header.Set(md5h, b64sum)
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}
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}
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}
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}
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