1package glacier
2
3import (
4	"encoding/hex"
5	"reflect"
6
7	"github.com/aws/aws-sdk-go/aws/awsutil"
8	"github.com/aws/aws-sdk-go/aws/request"
9)
10
11var (
12	defaultAccountID = "-"
13)
14
15func init() {
16	initRequest = func(r *request.Request) {
17		r.Handlers.Validate.PushFront(addAccountID)
18		r.Handlers.Validate.PushFront(copyParams) // this happens first
19		r.Handlers.Build.PushBack(addChecksum)
20		r.Handlers.Build.PushBack(addAPIVersion)
21	}
22}
23
24func copyParams(r *request.Request) {
25	r.Params = awsutil.CopyOf(r.Params)
26}
27
28func addAccountID(r *request.Request) {
29	if !r.ParamsFilled() {
30		return
31	}
32
33	v := reflect.Indirect(reflect.ValueOf(r.Params))
34	if f := v.FieldByName("AccountId"); f.IsNil() {
35		f.Set(reflect.ValueOf(&defaultAccountID))
36	}
37}
38
39func addChecksum(r *request.Request) {
40	if r.Body == nil || r.HTTPRequest.Header.Get("X-Amz-Sha256-Tree-Hash") != "" {
41		return
42	}
43
44	h := ComputeHashes(r.Body)
45	hstr := hex.EncodeToString(h.TreeHash)
46	r.HTTPRequest.Header.Set("X-Amz-Sha256-Tree-Hash", hstr)
47
48	hLstr := hex.EncodeToString(h.LinearHash)
49	r.HTTPRequest.Header.Set("X-Amz-Content-Sha256", hLstr)
50}
51
52func addAPIVersion(r *request.Request) {
53	r.HTTPRequest.Header.Set("X-Amz-Glacier-Version", r.ClientInfo.APIVersion)
54}
55