func (option *SignOption) init() {
if option.initialized {
return
}
option.headersToSignSpecified = len(option.HeadersToSign) > 0
if option.Timestamp == "" {
option.Timestamp = util.TimeToUTCString(time.Now())
}
if option.ExpirationPeriodInSeconds <= 0 {
option.ExpirationPeriodInSeconds = ExpirationPeriodInSeconds
}
if option.Headers == nil {
option.Headers = make(map[string]string, 3)
} else {
util.MapKeyToLower(option.Headers)
}
util.SliceToLower(option.HeadersToSign)
if !util.Contains(option.HeadersToSign, "host", true) {
option.HeadersToSign = append(option.HeadersToSign, "host")
}
if !option.headersToSignSpecified {
option.HeadersToSign = append(option.HeadersToSign, "x-bce-date")
option.Headers["x-bce-date"] = option.Timestamp
} else if util.Contains(option.HeadersToSign, "date", true) {
if !util.MapContains(option.Headers, generateHeaderValidCompareFunc("date")) {
option.Headers["date"] = time.Now().Format(time.RFC1123)
} else {
option.Headers["date"] = util.TimeStringToRFC1123(util.GetMapValue(option.Headers, "date", true))
}
} else {
if !util.MapContains(option.Headers, generateHeaderValidCompareFunc("x-bce-date")) {
option.Headers["x-bce-date"] = option.Timestamp
}
}
option.initialized = true
}
func (option *SignOption) AddHeadersToSign(headers ...string) {
if option.HeadersToSign == nil {
option.HeadersToSign = []string{}
option.HeadersToSign = append(option.HeadersToSign, headers...)
} else {
for _, header := range headers {
if !util.Contains(option.HeadersToSign, header, true) {
option.HeadersToSign = append(option.HeadersToSign, header)
}
}
}
}
func (req *Request) toCanonicalHeaderString(option *SignOption) string {
headerMap := make(map[string]string, len(req.Header))
for key, value := range req.Header {
if !option.headersToSignSpecified {
if isCanonicalHeader(key) {
headerMap[key] = value[0]
}
} else if util.Contains(option.HeadersToSign, key, true) {
headerMap[key] = value[0]
}
}
result := util.ToCanonicalHeaderString(headerMap)
return result
}
func isCanonicalHeader(key string) bool {
key = strings.ToLower(key)
return util.Contains(canonicalHeaders, key, true) || strings.Index(key, "x-bce-") == 0
}