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ecs.go
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ecs.go
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package ecs
import (
"fmt"
"strings"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/service/ecs"
logger "github.com/mtlang/Policy-Urchin/log"
"github.com/mtlang/Policy-Urchin/cache"
)
// GetAllEcsTaskDefinitions ...
func GetAllEcsTaskDefinitions(log logger.Logger, sess client.ConfigProvider) map[string][]string {
// taskMap is a map[role arn], list of tasks
taskMap := make(map[string][]string)
ecsClient := ecs.New(sess)
taskCount := 0
// Get name, and role of every ecs task
listTaskDefinitionsInput := ecs.ListTaskDefinitionsInput{}
taskPage, err := ecsClient.ListTaskDefinitions(&listTaskDefinitionsInput)
if err != nil {
log.Fatal(err)
}
for _, taskArn := range taskPage.TaskDefinitionArns {
describeTaskDefinitionInput := ecs.DescribeTaskDefinitionInput{
TaskDefinition: taskArn,
}
describeTaskDefinitionOutput, err := ecsClient.DescribeTaskDefinition(&describeTaskDefinitionInput)
if err != nil {
log.Fatal(err)
}
task := describeTaskDefinitionOutput.TaskDefinition
taskName := fmt.Sprintf("%s:%d", *task.Family, *task.Revision)
taskRole := ""
taskRoleArn := ""
if task.TaskRoleArn == nil {
continue
} else {
taskRoleArn = *task.TaskRoleArn
splitRole := strings.Split(taskRoleArn, "/")
taskRole = splitRole[len(splitRole)-1]
}
if _, ok := taskMap[taskRoleArn]; ok {
taskMap[taskRoleArn] = append(taskMap[taskRoleArn], fmt.Sprintf("Task: %s via %s", taskName, taskRole))
} else {
taskMap[taskRoleArn] = []string{fmt.Sprintf("Task: %s via %s", taskName, taskRole)}
}
taskCount++
}
// Keep going until we run out of pages
for taskPage.NextToken != nil {
listTaskDefinitionsInput = ecs.ListTaskDefinitionsInput{
NextToken: taskPage.NextToken,
}
taskPage, err = ecsClient.ListTaskDefinitions(&listTaskDefinitionsInput)
if err != nil {
log.Fatal(err)
}
for _, taskArn := range taskPage.TaskDefinitionArns {
describeTaskDefinitionInput := ecs.DescribeTaskDefinitionInput{
TaskDefinition: taskArn,
}
describeTaskDefinitionOutput, err := ecsClient.DescribeTaskDefinition(&describeTaskDefinitionInput)
if err != nil {
log.Fatal(err)
}
task := describeTaskDefinitionOutput.TaskDefinition
taskName := fmt.Sprintf("%s:%d", *task.Family, *task.Revision)
taskRole := ""
taskRoleArn := ""
if task.TaskRoleArn == nil {
continue
} else {
taskRoleArn = *task.TaskRoleArn
splitRole := strings.Split(taskRoleArn, "/")
taskRole = splitRole[len(splitRole)-1]
}
if _, ok := taskMap[taskRoleArn]; ok {
taskMap[taskRoleArn] = append(taskMap[taskRoleArn], fmt.Sprintf("Task: %s via %s", taskName, taskRole))
} else {
taskMap[taskRoleArn] = []string{fmt.Sprintf("Task: %s via %s", taskName, taskRole)}
}
taskCount++
}
}
log.Infof("Found %d tasks", taskCount)
return taskMap
}
// CheckEcsTaskDefinitions ...
func CheckEcsTaskDefinitions(log logger.Logger, sess client.ConfigProvider, auditList cache.Audits,
auditResults *map[string]map[string]map[string][]string, localRoles map[string]map[string][]string, taskMap map[string][]string) {
// For each task, simulate its policy
for action, resourceMap := range localRoles {
for resource, localRoleList := range resourceMap {
for auditID, auditMap := range *auditResults {
for auditAction := range auditMap {
if auditAction != action {
continue
}
for _, localRole := range localRoleList {
for taskRole, taskNames := range taskMap {
splitRole := strings.Split(taskRole, "/")
taskRole = splitRole[len(splitRole)-1]
if taskRole != localRole {
continue
}
(*auditResults)[auditID][action][resource] =
append((*auditResults)[auditID][action][resource], taskNames...)
}
}
}
}
}
}
}