/
policy.go
306 lines (268 loc) · 7.12 KB
/
policy.go
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package api
import (
"encoding/json"
"fmt"
"github.com/YaleSpinup/ecr-api/iam"
log "github.com/sirupsen/logrus"
)
// orgTagAccessPolicy generates the org tag conditional policy to be passed inline when assuming a role
func orgTagAccessPolicy(org string) (string, error) {
log.Debugf("generating org policy document")
policy := iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Effect: "Allow",
Action: []string{"*"},
Resource: []string{"*"},
Condition: iam.Condition{
"StringEquals": iam.ConditionStatement{
"aws:ResourceTag/spinup:org": []string{org},
},
},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}
func (s *server) repositoryUserCreatePolicy() (string, error) {
policy := &iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "CreateRepositoryUser",
Effect: "Allow",
Action: []string{
"iam:CreatePolicy",
"iam:UntagUser",
"iam:GetPolicyVersion",
"iam:AddUserToGroup",
"iam:GetPolicy",
"iam:ListAttachedGroupPolicies",
"iam:ListGroupPolicies",
"iam:AttachGroupPolicy",
"iam:GetUser",
"iam:CreatePolicyVersion",
"iam:CreateUser",
"iam:GetGroup",
"iam:CreateGroup",
"iam:TagUser",
},
Resource: []string{
"arn:aws:iam::*:group/*",
fmt.Sprintf("arn:aws:iam::*:policy/spinup/%s/*", s.org),
fmt.Sprintf("arn:aws:iam::*:user/spinup/%s/*", s.org),
},
},
{
Sid: "ListRepositoryUserPolicies",
Effect: "Allow",
Action: []string{
"iam:ListPolicies",
},
Resource: []string{"*"},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}
func (s *server) repositoryDeletePolicy(org string) (string, error) {
policy := &iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "DeleteRepositoryUser",
Effect: "Allow",
Action: []string{
"iam:DeleteAccessKey",
"iam:RemoveUserFromGroup",
"iam:ListAccessKeys",
"iam:ListGroupsForUser",
"iam:DeleteUser",
"iam:GetUser",
"iam:ListUsers",
},
Resource: []string{
fmt.Sprintf("arn:aws:iam::*:user/spinup/%s/*", s.org),
fmt.Sprintf("arn:aws:iam::*:group/spinup/%s/SpinupECRAdminGroup-%s", s.org, s.org),
},
},
{
Effect: "Allow",
Action: []string{"*"},
Resource: []string{"*"},
Condition: iam.Condition{
"StringEquals": iam.ConditionStatement{
"aws:ResourceTag/spinup:org": []string{org},
},
},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}
func (s *server) repositoryUserDeletePolicy() (string, error) {
policy := &iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "DeleteRepositoryUser",
Effect: "Allow",
Action: []string{
"iam:DeleteAccessKey",
"iam:RemoveUserFromGroup",
"iam:ListAccessKeys",
"iam:ListGroupsForUser",
"iam:DeleteUser",
"iam:GetUser",
},
Resource: []string{
fmt.Sprintf("arn:aws:iam::*:user/spinup/%s/*", s.org),
fmt.Sprintf("arn:aws:iam::*:group/spinup/%s/SpinupECRAdminGroup-%s", s.org, s.org),
},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}
func (s *server) repositoryUserUpdatePolicy() (string, error) {
policy := &iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "UpdateRepositoryUser",
Effect: "Allow",
Action: []string{
"iam:UntagUser",
"iam:DeleteAccessKey",
"iam:RemoveUserFromGroup",
"iam:TagUser",
"iam:CreateAccessKey",
"iam:ListAccessKeys",
},
Resource: []string{
fmt.Sprintf("arn:aws:iam::*:user/spinup/%s/*", s.org),
fmt.Sprintf("arn:aws:iam::*:group/spinup/%s/SpinupECRAdminGroup-%s", s.org, s.org),
},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}
// repositoryPolicy accepts a list of groups and returns the policy to allow ecr access
// for resources in the same org/group as well as any passed groups
func repositoryPolicy(groups []string) (string, error) {
groupConditions := append([]string{"${aws:ResourceTag/spinup:spaceid}"}, groups...)
log.Debugf("generating policy text from groups %+v", groups)
policy := iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "AllowPullImagesFromSpaceAndOrg",
Effect: "Allow",
Action: []string{
"ecr:GetAuthorizationToken",
"ecr:BatchCheckLayerAvailability",
"ecr:GetDownloadUrlForLayer",
"ecr:BatchGetImage",
},
Principal: iam.Principal{"AWS": iam.Value{"*"}},
Condition: iam.Condition{
"StringEqualsIgnoreCase": iam.ConditionStatement{
"aws:PrincipalTag/spinup:org": []string{"${aws:ResourceTag/spinup:org}"},
"aws:PrincipalTag/spinup:spaceid": groupConditions,
},
},
},
},
}
policyDoc, err := json.Marshal(policy)
if err != nil {
log.Errorf("failed to generate repository policy documentfor %s", err)
return "", err
}
log.Debugf("returning policy document from groups: %s", string(policyDoc))
return string(policyDoc), nil
}
// repositoryGroupsFromPolicy returns the list of groups from the repository policy string
func repositoryGroupsFromPolicy(policy string) ([]string, error) {
if policy == "" {
return []string{}, nil
}
log.Debugf("getting groups from policy text: %s", policy)
policyDoc := iam.PolicyDocument{}
if err := json.Unmarshal([]byte(policy), &policyDoc); err != nil {
return nil, err
}
groups := []string{}
// for all of the statements in our policy
for _, statement := range policyDoc.Statement {
// if we aren't dealing with the policy we set, continue to the next statement
if statement.Sid != "AllowPullImagesFromSpaceAndOrg" {
continue
}
conditionStatement, ok := statement.Condition["StringEqualsIgnoreCase"]
if !ok {
continue
}
for k, v := range conditionStatement {
// look for the condition on the spaceid tag
if k != "aws:PrincipalTag/spinup:spaceid" {
log.Debugf("resource policy condition tag key '%s' is not 'aws:PrincipalTag/spinup:spaceid', continuing", k)
continue
}
// collect the spaceid tags and add to the list of groups
for _, g := range v {
// ignore the "same space" group
if g == "${aws:ResourceTag/spinup:spaceid}" {
continue
}
groups = append(groups, g)
}
}
}
log.Debugf("returning groups list: %v", groups)
return groups, nil
}
func (s *server) repositoryImageDeletePolicy(account, repoName string) (string, error) {
policy := &iam.PolicyDocument{
Version: "2012-10-17",
Statement: []iam.StatementEntry{
{
Sid: "DeleteRepositoryImage",
Effect: "Allow",
Action: []string{
"ecr:BatchDeleteImage",
},
Resource: []string{
fmt.Sprintf("arn:aws:ecr:*:%s:repository/%s", account, repoName),
},
},
},
}
j, err := json.Marshal(policy)
if err != nil {
return "", err
}
return string(j), nil
}