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/
iam.go
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/
iam.go
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// The iam package provides types and functions for interaction with the AWS
// Identity and Access Management (IAM) service.
package iam
import (
"encoding/xml"
"github.com/HailoOSS/goamz/aws"
"net/http"
"net/url"
"strconv"
"strings"
"time"
)
// The IAM type encapsulates operations operations with the IAM endpoint.
type IAM struct {
aws.Auth
aws.Region
}
// New creates a new IAM instance.
func New(auth aws.Auth, region aws.Region) *IAM {
return &IAM{auth, region}
}
func (iam *IAM) query(params map[string]string, resp interface{}) error {
params["Version"] = "2010-05-08"
params["Timestamp"] = time.Now().In(time.UTC).Format(time.RFC3339)
endpoint, err := url.Parse(iam.IAMEndpoint)
if err != nil {
return err
}
sign(iam.Auth, "GET", "/", params, endpoint.Host)
endpoint.RawQuery = multimap(params).Encode()
r, err := http.Get(endpoint.String())
if err != nil {
return err
}
defer r.Body.Close()
if r.StatusCode > 200 {
return buildError(r)
}
return xml.NewDecoder(r.Body).Decode(resp)
}
func (iam *IAM) postQuery(params map[string]string, resp interface{}) error {
endpoint, err := url.Parse(iam.IAMEndpoint)
if err != nil {
return err
}
params["Version"] = "2010-05-08"
params["Timestamp"] = time.Now().In(time.UTC).Format(time.RFC3339)
sign(iam.Auth, "POST", "/", params, endpoint.Host)
encoded := multimap(params).Encode()
body := strings.NewReader(encoded)
req, err := http.NewRequest("POST", endpoint.String(), body)
if err != nil {
return err
}
req.Header.Set("Host", endpoint.Host)
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Set("Content-Length", strconv.Itoa(len(encoded)))
r, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer r.Body.Close()
if r.StatusCode > 200 {
return buildError(r)
}
return xml.NewDecoder(r.Body).Decode(resp)
}
func buildError(r *http.Response) error {
var (
err Error
errors xmlErrors
)
xml.NewDecoder(r.Body).Decode(&errors)
if len(errors.Errors) > 0 {
err = errors.Errors[0]
}
err.StatusCode = r.StatusCode
if err.Message == "" {
err.Message = r.Status
}
return &err
}
func multimap(p map[string]string) url.Values {
q := make(url.Values, len(p))
for k, v := range p {
q[k] = []string{v}
}
return q
}
// Response to a CreateUser request.
//
// See http://goo.gl/JS9Gz for more details.
type CreateUserResp struct {
RequestId string `xml:"ResponseMetadata>RequestId"`
User User `xml:"CreateUserResult>User"`
}
// User encapsulates a user managed by IAM.
//
// See http://goo.gl/BwIQ3 for more details.
type User struct {
Arn string
Path string
Id string `xml:"UserId"`
Name string `xml:"UserName"`
}
// CreateUser creates a new user in IAM.
//
// See http://goo.gl/JS9Gz for more details.
func (iam *IAM) CreateUser(name, path string) (*CreateUserResp, error) {
params := map[string]string{
"Action": "CreateUser",
"Path": path,
"UserName": name,
}
resp := new(CreateUserResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response for GetUser requests.
//
// See http://goo.gl/ZnzRN for more details.
type GetUserResp struct {
RequestId string `xml:"ResponseMetadata>RequestId"`
User User `xml:"GetUserResult>User"`
}
// GetUser gets a user from IAM.
//
// See http://goo.gl/ZnzRN for more details.
func (iam *IAM) GetUser(name string) (*GetUserResp, error) {
params := map[string]string{
"Action": "GetUser",
"UserName": name,
}
resp := new(GetUserResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// DeleteUser deletes a user from IAM.
//
// See http://goo.gl/jBuCG for more details.
func (iam *IAM) DeleteUser(name string) (*SimpleResp, error) {
params := map[string]string{
"Action": "DeleteUser",
"UserName": name,
}
resp := new(SimpleResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response to a CreateGroup request.
//
// See http://goo.gl/n7NNQ for more details.
type CreateGroupResp struct {
Group Group `xml:"CreateGroupResult>Group"`
RequestId string `xml:"ResponseMetadata>RequestId"`
}
// Group encapsulates a group managed by IAM.
//
// See http://goo.gl/ae7Vs for more details.
type Group struct {
Arn string
Id string `xml:"GroupId"`
Name string `xml:"GroupName"`
Path string
}
// CreateGroup creates a new group in IAM.
//
// The path parameter can be used to identify which division or part of the
// organization the user belongs to.
//
// If path is unset ("") it defaults to "/".
//
// See http://goo.gl/n7NNQ for more details.
func (iam *IAM) CreateGroup(name string, path string) (*CreateGroupResp, error) {
params := map[string]string{
"Action": "CreateGroup",
"GroupName": name,
}
if path != "" {
params["Path"] = path
}
resp := new(CreateGroupResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response to a ListGroups request.
//
// See http://goo.gl/W2TRj for more details.
type GroupsResp struct {
Groups []Group `xml:"ListGroupsResult>Groups>member"`
RequestId string `xml:"ResponseMetadata>RequestId"`
}
// Groups list the groups that have the specified path prefix.
//
// The parameter pathPrefix is optional. If pathPrefix is "", all groups are
// returned.
//
// See http://goo.gl/W2TRj for more details.
func (iam *IAM) Groups(pathPrefix string) (*GroupsResp, error) {
params := map[string]string{
"Action": "ListGroups",
}
if pathPrefix != "" {
params["PathPrefix"] = pathPrefix
}
resp := new(GroupsResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// DeleteGroup deletes a group from IAM.
//
// See http://goo.gl/d5i2i for more details.
func (iam *IAM) DeleteGroup(name string) (*SimpleResp, error) {
params := map[string]string{
"Action": "DeleteGroup",
"GroupName": name,
}
resp := new(SimpleResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response to a CreateAccessKey request.
//
// See http://goo.gl/L46Py for more details.
type CreateAccessKeyResp struct {
RequestId string `xml:"ResponseMetadata>RequestId"`
AccessKey AccessKey `xml:"CreateAccessKeyResult>AccessKey"`
}
// AccessKey encapsulates an access key generated for a user.
//
// See http://goo.gl/LHgZR for more details.
type AccessKey struct {
UserName string
Id string `xml:"AccessKeyId"`
Secret string `xml:"SecretAccessKey,omitempty"`
Status string
}
// CreateAccessKey creates a new access key in IAM.
//
// See http://goo.gl/L46Py for more details.
func (iam *IAM) CreateAccessKey(userName string) (*CreateAccessKeyResp, error) {
params := map[string]string{
"Action": "CreateAccessKey",
"UserName": userName,
}
resp := new(CreateAccessKeyResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response to AccessKeys request.
//
// See http://goo.gl/Vjozx for more details.
type AccessKeysResp struct {
RequestId string `xml:"ResponseMetadata>RequestId"`
AccessKeys []AccessKey `xml:"ListAccessKeysResult>AccessKeyMetadata>member"`
}
// AccessKeys lists all acccess keys associated with a user.
//
// The userName parameter is optional. If set to "", the userName is determined
// implicitly based on the AWS Access Key ID used to sign the request.
//
// See http://goo.gl/Vjozx for more details.
func (iam *IAM) AccessKeys(userName string) (*AccessKeysResp, error) {
params := map[string]string{
"Action": "ListAccessKeys",
}
if userName != "" {
params["UserName"] = userName
}
resp := new(AccessKeysResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// DeleteAccessKey deletes an access key from IAM.
//
// The userName parameter is optional. If set to "", the userName is determined
// implicitly based on the AWS Access Key ID used to sign the request.
//
// See http://goo.gl/hPGhw for more details.
func (iam *IAM) DeleteAccessKey(id, userName string) (*SimpleResp, error) {
params := map[string]string{
"Action": "DeleteAccessKey",
"AccessKeyId": id,
}
if userName != "" {
params["UserName"] = userName
}
resp := new(SimpleResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// Response to a GetUserPolicy request.
//
// See http://goo.gl/BH04O for more details.
type GetUserPolicyResp struct {
Policy UserPolicy `xml:"GetUserPolicyResult"`
RequestId string `xml:"ResponseMetadata>RequestId"`
}
// UserPolicy encapsulates an IAM group policy.
//
// See http://goo.gl/C7hgS for more details.
type UserPolicy struct {
Name string `xml:"PolicyName"`
UserName string `xml:"UserName"`
Document string `xml:"PolicyDocument"`
}
// GetUserPolicy gets a user policy in IAM.
//
// See http://goo.gl/BH04O for more details.
func (iam *IAM) GetUserPolicy(userName, policyName string) (*GetUserPolicyResp, error) {
params := map[string]string{
"Action": "GetUserPolicy",
"UserName": userName,
"PolicyName": policyName,
}
resp := new(GetUserPolicyResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
return nil, nil
}
// PutUserPolicy creates a user policy in IAM.
//
// See http://goo.gl/ldCO8 for more details.
func (iam *IAM) PutUserPolicy(userName, policyName, policyDocument string) (*SimpleResp, error) {
params := map[string]string{
"Action": "PutUserPolicy",
"UserName": userName,
"PolicyName": policyName,
"PolicyDocument": policyDocument,
}
resp := new(SimpleResp)
if err := iam.postQuery(params, resp); err != nil {
return nil, err
}
return resp, nil
}
// DeleteUserPolicy deletes a user policy from IAM.
//
// See http://goo.gl/7Jncn for more details.
func (iam *IAM) DeleteUserPolicy(userName, policyName string) (*SimpleResp, error) {
params := map[string]string{
"Action": "DeleteUserPolicy",
"PolicyName": policyName,
"UserName": userName,
}
resp := new(SimpleResp)
if err := iam.query(params, resp); err != nil {
return nil, err
}
return resp, nil
}
type SimpleResp struct {
RequestId string `xml:"ResponseMetadata>RequestId"`
}
type xmlErrors struct {
Errors []Error `xml:"Error"`
}
// Error encapsulates an IAM error.
type Error struct {
// HTTP status code of the error.
StatusCode int
// AWS code of the error.
Code string
// Message explaining the error.
Message string
}
func (e *Error) Error() string {
var prefix string
if e.Code != "" {
prefix = e.Code + ": "
}
if prefix == "" && e.StatusCode > 0 {
prefix = strconv.Itoa(e.StatusCode) + ": "
}
return prefix + e.Message
}