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package providers |
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import ( |
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"encoding/json" |
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"errors" |
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"fmt" |
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"io/ioutil" |
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"net/http" |
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"net/url" |
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"strconv" |
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"strings" |
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"time" |
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"github.com/aliyun/credentials-go/credentials/internal/utils" |
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) |
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type assumedRoleUser struct { |
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} |
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type credentials struct { |
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SecurityToken *string `json:"SecurityToken"` |
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Expiration *string `json:"Expiration"` |
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AccessKeySecret *string `json:"AccessKeySecret"` |
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AccessKeyId *string `json:"AccessKeyId"` |
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} |
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type assumeRoleResponse struct { |
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RequestID *string `json:"RequestId"` |
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AssumedRoleUser *assumedRoleUser `json:"AssumedRoleUser"` |
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Credentials *credentials `json:"Credentials"` |
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} |
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type sessionCredentials struct { |
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AccessKeyId string |
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AccessKeySecret string |
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SecurityToken string |
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Expiration string |
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} |
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type HttpOptions struct { |
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Proxy string |
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ConnectTimeout int |
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ReadTimeout int |
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} |
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type RAMRoleARNCredentialsProvider struct { |
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credentialsProvider CredentialsProvider |
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roleArn string |
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roleSessionName string |
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durationSeconds int |
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policy string |
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externalId string |
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// for sts endpoint |
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stsRegionId string |
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stsEndpoint string |
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// for http options |
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httpOptions *HttpOptions |
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// inner |
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expirationTimestamp int64 |
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lastUpdateTimestamp int64 |
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sessionCredentials *sessionCredentials |
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} |
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type RAMRoleARNCredentialsProviderBuilder struct { |
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provider *RAMRoleARNCredentialsProvider |
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} |
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func NewRAMRoleARNCredentialsProviderBuilder() *RAMRoleARNCredentialsProviderBuilder { |
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return &RAMRoleARNCredentialsProviderBuilder{ |
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provider: &RAMRoleARNCredentialsProvider{}, |
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} |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithCredentialsProvider(credentialsProvider CredentialsProvider) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.credentialsProvider = credentialsProvider |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithRoleArn(roleArn string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.roleArn = roleArn |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithStsRegionId(regionId string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.stsRegionId = regionId |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithStsEndpoint(endpoint string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.stsEndpoint = endpoint |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithRoleSessionName(roleSessionName string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.roleSessionName = roleSessionName |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithPolicy(policy string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.policy = policy |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithExternalId(externalId string) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.externalId = externalId |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithDurationSeconds(durationSeconds int) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.durationSeconds = durationSeconds |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) WithHttpOptions(httpOptions *HttpOptions) *RAMRoleARNCredentialsProviderBuilder { |
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builder.provider.httpOptions = httpOptions |
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return builder |
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} |
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func (builder *RAMRoleARNCredentialsProviderBuilder) Build() (provider *RAMRoleARNCredentialsProvider, err error) { |
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if builder.provider.credentialsProvider == nil { |
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err = errors.New("must specify a previous credentials provider to asssume role") |
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return |
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} |
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if builder.provider.roleArn == "" { |
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err = errors.New("the RoleArn is empty") |
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return |
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} |
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if builder.provider.roleSessionName == "" { |
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builder.provider.roleSessionName = "credentials-go-" + strconv.FormatInt(time.Now().UnixNano()/1000, 10) |
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} |
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// duration seconds |
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if builder.provider.durationSeconds == 0 { |
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// default to 3600 |
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builder.provider.durationSeconds = 3600 |
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} |
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if builder.provider.durationSeconds < 900 { |
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err = errors.New("session duration should be in the range of 900s - max session duration") |
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return |
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} |
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// sts endpoint |
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if builder.provider.stsEndpoint == "" { |
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if builder.provider.stsRegionId != "" { |
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builder.provider.stsEndpoint = fmt.Sprintf("sts.%s.aliyuncs.com", builder.provider.stsRegionId) |
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} else { |
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builder.provider.stsEndpoint = "sts.aliyuncs.com" |
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} |
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} |
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provider = builder.provider |
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return |
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} |
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func (provider *RAMRoleARNCredentialsProvider) getCredentials(cc *Credentials) (session *sessionCredentials, err error) { |
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method := "POST" |
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host := provider.stsEndpoint |
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queries := make(map[string]string) |
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queries["Version"] = "2015-04-01" |
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queries["Action"] = "AssumeRole" |
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queries["Format"] = "JSON" |
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queries["Timestamp"] = utils.GetTimeInFormatISO8601() |
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queries["SignatureMethod"] = "HMAC-SHA1" |
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queries["SignatureVersion"] = "1.0" |
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queries["SignatureNonce"] = utils.GetNonce() |
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queries["AccessKeyId"] = cc.AccessKeyId |
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if cc.SecurityToken != "" { |
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queries["SecurityToken"] = cc.SecurityToken |
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} |
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bodyForm := make(map[string]string) |
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bodyForm["RoleArn"] = provider.roleArn |
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if provider.policy != "" { |
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bodyForm["Policy"] = provider.policy |
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} |
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if provider.externalId != "" { |
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bodyForm["ExternalId"] = provider.externalId |
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} |
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bodyForm["RoleSessionName"] = provider.roleSessionName |
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bodyForm["DurationSeconds"] = strconv.Itoa(provider.durationSeconds) |
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// caculate signature |
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signParams := make(map[string]string) |
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for key, value := range queries { |
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signParams[key] = value |
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} |
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for key, value := range bodyForm { |
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signParams[key] = value |
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} |
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stringToSign := utils.GetURLFormedMap(signParams) |
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stringToSign = strings.Replace(stringToSign, "+", "%20", -1) |
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stringToSign = strings.Replace(stringToSign, "*", "%2A", -1) |
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stringToSign = strings.Replace(stringToSign, "%7E", "~", -1) |
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stringToSign = url.QueryEscape(stringToSign) |
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stringToSign = method + "&%2F&" + stringToSign |
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secret := cc.AccessKeySecret + "&" |
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queries["Signature"] = utils.ShaHmac1(stringToSign, secret) |
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querystring := utils.GetURLFormedMap(queries) |
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// do request |
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httpUrl := fmt.Sprintf("https://%s/?%s", host, querystring) |
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body := utils.GetURLFormedMap(bodyForm) |
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httpRequest, err := hookNewRequest(http.NewRequest)(method, httpUrl, strings.NewReader(body)) |
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if err != nil { |
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return |
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} |
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// set headers |
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httpRequest.Header["Accept-Encoding"] = []string{"identity"} |
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httpRequest.Header["Content-Type"] = []string{"application/x-www-form-urlencoded"} |
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httpRequest.Header["x-credentials-provider"] = []string{cc.ProviderName} |
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httpClient := &http.Client{} |
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if provider.httpOptions != nil { |
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httpClient.Timeout = time.Duration(provider.httpOptions.ReadTimeout) * time.Second |
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proxy := &url.URL{} |
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if provider.httpOptions.Proxy != "" { |
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proxy, err = url.Parse(provider.httpOptions.Proxy) |
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if err != nil { |
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return |
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} |
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} |
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trans := &http.Transport{} |
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if proxy != nil && provider.httpOptions.Proxy != "" { |
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trans.Proxy = http.ProxyURL(proxy) |
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} |
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trans.DialContext = utils.Timeout(time.Duration(provider.httpOptions.ConnectTimeout) * time.Second) |
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httpClient.Transport = trans |
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} |
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httpResponse, err := hookDo(httpClient.Do)(httpRequest) |
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if err != nil { |
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return |
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} |
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defer httpResponse.Body.Close() |
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responseBody, err := ioutil.ReadAll(httpResponse.Body) |
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if err != nil { |
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return |
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} |
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if httpResponse.StatusCode != http.StatusOK { |
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err = errors.New("refresh session token failed: " + string(responseBody)) |
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return |
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} |
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var data assumeRoleResponse |
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err = json.Unmarshal(responseBody, &data) |
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if err != nil { |
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err = fmt.Errorf("refresh RoleArn sts token err, json.Unmarshal fail: %s", err.Error()) |
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return |
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} |
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if data.Credentials == nil { |
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err = fmt.Errorf("refresh RoleArn sts token err, fail to get credentials") |
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return |
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} |
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if data.Credentials.AccessKeyId == nil || data.Credentials.AccessKeySecret == nil || data.Credentials.SecurityToken == nil { |
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err = fmt.Errorf("refresh RoleArn sts token err, fail to get credentials") |
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return |
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} |
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session = &sessionCredentials{ |
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AccessKeyId: *data.Credentials.AccessKeyId, |
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AccessKeySecret: *data.Credentials.AccessKeySecret, |
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SecurityToken: *data.Credentials.SecurityToken, |
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Expiration: *data.Credentials.Expiration, |
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} |
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return |
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} |
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func (provider *RAMRoleARNCredentialsProvider) needUpdateCredential() (result bool) { |
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if provider.expirationTimestamp == 0 { |
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return true |
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} |
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return provider.expirationTimestamp-time.Now().Unix() <= 180 |
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} |
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func (provider *RAMRoleARNCredentialsProvider) GetCredentials() (cc *Credentials, err error) { |
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if provider.sessionCredentials == nil || provider.needUpdateCredential() { |
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// 获取前置凭证 |
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previousCredentials, err1 := provider.credentialsProvider.GetCredentials() |
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if err1 != nil { |
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return nil, err1 |
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} |
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sessionCredentials, err2 := provider.getCredentials(previousCredentials) |
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if err2 != nil { |
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return nil, err2 |
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} |
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expirationTime, err := time.Parse("2006-01-02T15:04:05Z", sessionCredentials.Expiration) |
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if err != nil { |
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return nil, err |
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} |
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provider.expirationTimestamp = expirationTime.Unix() |
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provider.lastUpdateTimestamp = time.Now().Unix() |
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provider.sessionCredentials = sessionCredentials |
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} |
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cc = &Credentials{ |
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AccessKeyId: provider.sessionCredentials.AccessKeyId, |
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AccessKeySecret: provider.sessionCredentials.AccessKeySecret, |
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SecurityToken: provider.sessionCredentials.SecurityToken, |
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ProviderName: fmt.Sprintf("%s/%s", provider.GetProviderName(), provider.credentialsProvider.GetProviderName()), |
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} |
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return |
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} |
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func (provider *RAMRoleARNCredentialsProvider) GetProviderName() string { |
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return "ram_role_arn" |
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} |
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aliyun /
credentials-go
