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IamListAdmins.go
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IamListAdmins.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package main
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/iam"
"fmt"
"os"
)
func UserPolicyHasAdmin(user *iam.UserDetail, admin string) bool {
for _, policy := range user.UserPolicyList {
if *policy.PolicyName == admin {
return true
}
}
return false
}
func AttachedUserPolicyHasAdmin(user *iam.UserDetail, admin string) bool {
for _, policy := range user.AttachedManagedPolicies {
if *policy.PolicyName == admin {
return true
}
}
return false
}
func GroupPolicyHasAdmin(svc *iam.IAM, group *iam.Group, admin string) bool {
input := &iam.ListGroupPoliciesInput{
GroupName: group.GroupName,
}
result, err := svc.ListGroupPolicies(input)
if err != nil {
fmt.Println("Got error calling ListGroupPolicies for group", group.GroupName)
}
// Wade through policies
for _, policyName := range result.PolicyNames {
if *policyName == admin {
return true
}
}
return false
}
func AttachedGroupPolicyHasAdmin(svc *iam.IAM, group *iam.Group, admin string) bool {
input := &iam.ListAttachedGroupPoliciesInput{GroupName: group.GroupName}
result, err := svc.ListAttachedGroupPolicies(input)
if err != nil {
fmt.Println("Got error getting attached group policies:")
fmt.Println(err.Error())
os.Exit(1)
}
for _, policy := range result.AttachedPolicies {
if *policy.PolicyName == admin {
return true
}
}
return false
}
func UsersGroupsHaveAdmin(svc *iam.IAM, user *iam.UserDetail, admin string) bool {
input := &iam.ListGroupsForUserInput{UserName: user.UserName}
result, err := svc.ListGroupsForUser(input)
if err != nil {
fmt.Println("Got error getting groups for user:")
fmt.Println(err.Error())
os.Exit(1)
}
for _, group := range result.Groups {
groupPolicyHasAdmin := GroupPolicyHasAdmin(svc, group, admin)
if groupPolicyHasAdmin {
return true
}
attachedGroupPolicyHasAdmin := AttachedGroupPolicyHasAdmin(svc, group, admin)
if attachedGroupPolicyHasAdmin {
return true
}
}
return false
}
func IsUserAdmin(svc *iam.IAM, user *iam.UserDetail, admin string) bool {
// Check policy, attached policy, and groups (policy and attached policy)
policyHasAdmin := UserPolicyHasAdmin(user, admin)
if policyHasAdmin {
return true
}
attachedPolicyHasAdmin := AttachedUserPolicyHasAdmin(user, admin)
if attachedPolicyHasAdmin {
return true
}
userGroupsHaveAdmin := UsersGroupsHaveAdmin(svc, user, admin)
if userGroupsHaveAdmin {
return true
}
return false
}
func main() {
sess, err := session.NewSession()
if err != nil {
fmt.Println("Got error creating new session")
fmt.Println(err.Error())
os.Exit(1)
}
svc := iam.New(sess, &aws.Config{Region: aws.String("us-west-2")})
numUsers := 0
numAdmins := 0
// Get list of users
user := "User"
input := &iam.GetAccountAuthorizationDetailsInput{Filter: []*string{&user}}
resp, err := svc.GetAccountAuthorizationDetails(input)
if err != nil {
fmt.Println("Got error getting account details")
fmt.Println(err.Error())
os.Exit(1)
}
// The policy name that indicates administrator access
adminName := "AdministratorAccess"
// Wade through resulting users
for _, user := range resp.UserDetailList {
numUsers += 1
isAdmin := IsUserAdmin(svc, user, adminName)
if isAdmin {
fmt.Println(*user.UserName)
numAdmins += 1
}
}
// Are there more?
for *resp.IsTruncated {
input := &iam.GetAccountAuthorizationDetailsInput{Filter: []*string{&user}, Marker: resp.Marker}
resp, err = svc.GetAccountAuthorizationDetails(input)
if err != nil {
fmt.Println("Got error getting account details")
fmt.Println(err.Error())
os.Exit(1)
}
// Wade through resulting users
for _, user := range resp.UserDetailList {
numUsers += 1
isAdmin := IsUserAdmin(svc, user, adminName)
if isAdmin {
fmt.Println(*user.UserName)
numAdmins += 1
}
}
}
fmt.Println("")
fmt.Println("Found", numAdmins, "admin(s) out of", numUsers, "user(s).")
}