390 lines
9.6 KiB
Go
390 lines
9.6 KiB
Go
package aws
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"log"
|
|
"sort"
|
|
"strings"
|
|
|
|
"github.com/aws/aws-sdk-go/aws"
|
|
"github.com/aws/aws-sdk-go/aws/awserr"
|
|
"github.com/aws/aws-sdk-go/service/ec2"
|
|
"github.com/hashicorp/terraform/helper/hashcode"
|
|
"github.com/hashicorp/terraform/helper/schema"
|
|
)
|
|
|
|
func resourceAwsSecurityGroupRule() *schema.Resource {
|
|
return &schema.Resource{
|
|
Create: resourceAwsSecurityGroupRuleCreate,
|
|
Read: resourceAwsSecurityGroupRuleRead,
|
|
Delete: resourceAwsSecurityGroupRuleDelete,
|
|
|
|
SchemaVersion: 1,
|
|
MigrateState: resourceAwsSecurityGroupRuleMigrateState,
|
|
|
|
Schema: map[string]*schema.Schema{
|
|
"type": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
ForceNew: true,
|
|
Description: "Type of rule, ingress (inbound) or egress (outbound).",
|
|
},
|
|
|
|
"from_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
ForceNew: true,
|
|
},
|
|
|
|
"to_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
ForceNew: true,
|
|
},
|
|
|
|
"protocol": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
ForceNew: true,
|
|
},
|
|
|
|
"cidr_blocks": &schema.Schema{
|
|
Type: schema.TypeList,
|
|
Optional: true,
|
|
ForceNew: true,
|
|
Elem: &schema.Schema{Type: schema.TypeString},
|
|
},
|
|
|
|
"security_group_id": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
ForceNew: true,
|
|
},
|
|
|
|
"source_security_group_id": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Optional: true,
|
|
ForceNew: true,
|
|
Computed: true,
|
|
ConflictsWith: []string{"cidr_blocks"},
|
|
},
|
|
|
|
"self": &schema.Schema{
|
|
Type: schema.TypeBool,
|
|
Optional: true,
|
|
Default: false,
|
|
ForceNew: true,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func resourceAwsSecurityGroupRuleCreate(d *schema.ResourceData, meta interface{}) error {
|
|
conn := meta.(*AWSClient).ec2conn
|
|
sg_id := d.Get("security_group_id").(string)
|
|
sg, err := findResourceSecurityGroup(conn, sg_id)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
perm := expandIPPerm(d, sg)
|
|
|
|
ruleType := d.Get("type").(string)
|
|
|
|
var autherr error
|
|
switch ruleType {
|
|
case "ingress":
|
|
log.Printf("[DEBUG] Authorizing security group %s %s rule: %s",
|
|
sg_id, "Ingress", perm)
|
|
|
|
req := &ec2.AuthorizeSecurityGroupIngressInput{
|
|
GroupID: sg.GroupID,
|
|
IPPermissions: []*ec2.IPPermission{perm},
|
|
}
|
|
|
|
if sg.VPCID == nil || *sg.VPCID == "" {
|
|
req.GroupID = nil
|
|
req.GroupName = sg.GroupName
|
|
}
|
|
|
|
_, autherr = conn.AuthorizeSecurityGroupIngress(req)
|
|
|
|
case "egress":
|
|
log.Printf("[DEBUG] Authorizing security group %s %s rule: %#v",
|
|
sg_id, "Egress", perm)
|
|
|
|
req := &ec2.AuthorizeSecurityGroupEgressInput{
|
|
GroupID: sg.GroupID,
|
|
IPPermissions: []*ec2.IPPermission{perm},
|
|
}
|
|
|
|
_, autherr = conn.AuthorizeSecurityGroupEgress(req)
|
|
|
|
default:
|
|
return fmt.Errorf("Security Group Rule must be type 'ingress' or type 'egress'")
|
|
}
|
|
|
|
if autherr != nil {
|
|
if awsErr, ok := autherr.(awserr.Error); ok {
|
|
if awsErr.Code() == "InvalidPermission.Duplicate" {
|
|
return fmt.Errorf(`[WARN] A duplicate Security Group rule was found. This may be
|
|
a side effect of a now-fixed Terraform issue causing two security groups with
|
|
identical attributes but different source_security_group_ids to overwrite each
|
|
other in the state. See https://github.com/hashicorp/terraform/pull/2376 for more
|
|
information and instructions for recovery. Error message: %s`, awsErr.Message())
|
|
}
|
|
}
|
|
|
|
return fmt.Errorf(
|
|
"Error authorizing security group rule type %s: %s",
|
|
ruleType, autherr)
|
|
}
|
|
|
|
d.SetId(ipPermissionIDHash(ruleType, perm))
|
|
|
|
return resourceAwsSecurityGroupRuleRead(d, meta)
|
|
}
|
|
|
|
func resourceAwsSecurityGroupRuleRead(d *schema.ResourceData, meta interface{}) error {
|
|
conn := meta.(*AWSClient).ec2conn
|
|
sg_id := d.Get("security_group_id").(string)
|
|
sg, err := findResourceSecurityGroup(conn, sg_id)
|
|
if err != nil {
|
|
log.Printf("[DEBUG] Error finding Secuirty Group (%s) for Rule (%s): %s", sg_id, d.Id(), err)
|
|
d.SetId("")
|
|
return nil
|
|
}
|
|
|
|
var rule *ec2.IPPermission
|
|
ruleType := d.Get("type").(string)
|
|
var rl []*ec2.IPPermission
|
|
switch ruleType {
|
|
case "ingress":
|
|
rl = sg.IPPermissions
|
|
default:
|
|
rl = sg.IPPermissionsEgress
|
|
}
|
|
|
|
for _, r := range rl {
|
|
if d.Id() == ipPermissionIDHash(ruleType, r) {
|
|
rule = r
|
|
}
|
|
}
|
|
|
|
if rule == nil {
|
|
log.Printf("[DEBUG] Unable to find matching %s Security Group Rule for Group %s",
|
|
ruleType, sg_id)
|
|
d.SetId("")
|
|
return nil
|
|
}
|
|
|
|
d.Set("from_port", rule.FromPort)
|
|
d.Set("to_port", rule.ToPort)
|
|
d.Set("protocol", rule.IPProtocol)
|
|
d.Set("type", ruleType)
|
|
|
|
var cb []string
|
|
for _, c := range rule.IPRanges {
|
|
cb = append(cb, *c.CIDRIP)
|
|
}
|
|
|
|
d.Set("cidr_blocks", cb)
|
|
|
|
if len(rule.UserIDGroupPairs) > 0 {
|
|
s := rule.UserIDGroupPairs[0]
|
|
d.Set("source_security_group_id", *s.GroupID)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func resourceAwsSecurityGroupRuleDelete(d *schema.ResourceData, meta interface{}) error {
|
|
conn := meta.(*AWSClient).ec2conn
|
|
sg_id := d.Get("security_group_id").(string)
|
|
sg, err := findResourceSecurityGroup(conn, sg_id)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
perm := expandIPPerm(d, sg)
|
|
ruleType := d.Get("type").(string)
|
|
switch ruleType {
|
|
case "ingress":
|
|
log.Printf("[DEBUG] Revoking rule (%s) from security group %s:\n%s",
|
|
"ingress", sg_id, perm)
|
|
req := &ec2.RevokeSecurityGroupIngressInput{
|
|
GroupID: sg.GroupID,
|
|
IPPermissions: []*ec2.IPPermission{perm},
|
|
}
|
|
|
|
_, err = conn.RevokeSecurityGroupIngress(req)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf(
|
|
"Error revoking security group %s rules: %s",
|
|
sg_id, err)
|
|
}
|
|
case "egress":
|
|
|
|
log.Printf("[DEBUG] Revoking security group %#v %s rule: %#v",
|
|
sg_id, "egress", perm)
|
|
req := &ec2.RevokeSecurityGroupEgressInput{
|
|
GroupID: sg.GroupID,
|
|
IPPermissions: []*ec2.IPPermission{perm},
|
|
}
|
|
|
|
_, err = conn.RevokeSecurityGroupEgress(req)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf(
|
|
"Error revoking security group %s rules: %s",
|
|
sg_id, err)
|
|
}
|
|
}
|
|
|
|
d.SetId("")
|
|
|
|
return nil
|
|
}
|
|
|
|
func findResourceSecurityGroup(conn *ec2.EC2, id string) (*ec2.SecurityGroup, error) {
|
|
req := &ec2.DescribeSecurityGroupsInput{
|
|
GroupIDs: []*string{aws.String(id)},
|
|
}
|
|
resp, err := conn.DescribeSecurityGroups(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if resp == nil || len(resp.SecurityGroups) != 1 || resp.SecurityGroups[0] == nil {
|
|
return nil, fmt.Errorf(
|
|
"Expected to find one security group with ID %q, got: %#v",
|
|
id, resp.SecurityGroups)
|
|
}
|
|
|
|
return resp.SecurityGroups[0], nil
|
|
}
|
|
|
|
// ByGroupPair implements sort.Interface for []*ec2.UserIDGroupPairs based on
|
|
// GroupID or GroupName field (only one should be set).
|
|
type ByGroupPair []*ec2.UserIDGroupPair
|
|
|
|
func (b ByGroupPair) Len() int { return len(b) }
|
|
func (b ByGroupPair) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
|
|
func (b ByGroupPair) Less(i, j int) bool {
|
|
if b[i].GroupID != nil && b[j].GroupID != nil {
|
|
return *b[i].GroupID < *b[j].GroupID
|
|
}
|
|
if b[i].GroupName != nil && b[j].GroupName != nil {
|
|
return *b[i].GroupName < *b[j].GroupName
|
|
}
|
|
|
|
panic("mismatched security group rules, may be a terraform bug")
|
|
}
|
|
|
|
func ipPermissionIDHash(ruleType string, ip *ec2.IPPermission) string {
|
|
var buf bytes.Buffer
|
|
if ip.FromPort != nil && *ip.FromPort > 0 {
|
|
buf.WriteString(fmt.Sprintf("%d-", *ip.FromPort))
|
|
}
|
|
if ip.ToPort != nil && *ip.ToPort > 0 {
|
|
buf.WriteString(fmt.Sprintf("%d-", *ip.ToPort))
|
|
}
|
|
buf.WriteString(fmt.Sprintf("%s-", *ip.IPProtocol))
|
|
buf.WriteString(fmt.Sprintf("%s-", ruleType))
|
|
|
|
// We need to make sure to sort the strings below so that we always
|
|
// generate the same hash code no matter what is in the set.
|
|
if len(ip.IPRanges) > 0 {
|
|
s := make([]string, len(ip.IPRanges))
|
|
for i, r := range ip.IPRanges {
|
|
s[i] = *r.CIDRIP
|
|
}
|
|
sort.Strings(s)
|
|
|
|
for _, v := range s {
|
|
buf.WriteString(fmt.Sprintf("%s-", v))
|
|
}
|
|
}
|
|
|
|
if len(ip.UserIDGroupPairs) > 0 {
|
|
sort.Sort(ByGroupPair(ip.UserIDGroupPairs))
|
|
for _, pair := range ip.UserIDGroupPairs {
|
|
if pair.GroupID != nil {
|
|
buf.WriteString(fmt.Sprintf("%s-", *pair.GroupID))
|
|
} else {
|
|
buf.WriteString("-")
|
|
}
|
|
if pair.GroupName != nil {
|
|
buf.WriteString(fmt.Sprintf("%s-", *pair.GroupName))
|
|
} else {
|
|
buf.WriteString("-")
|
|
}
|
|
}
|
|
}
|
|
|
|
return fmt.Sprintf("sg-%d", hashcode.String(buf.String()))
|
|
}
|
|
|
|
func expandIPPerm(d *schema.ResourceData, sg *ec2.SecurityGroup) *ec2.IPPermission {
|
|
var perm ec2.IPPermission
|
|
|
|
perm.FromPort = aws.Int64(int64(d.Get("from_port").(int)))
|
|
perm.ToPort = aws.Int64(int64(d.Get("to_port").(int)))
|
|
perm.IPProtocol = aws.String(d.Get("protocol").(string))
|
|
|
|
// build a group map that behaves like a set
|
|
groups := make(map[string]bool)
|
|
if raw, ok := d.GetOk("source_security_group_id"); ok {
|
|
groups[raw.(string)] = true
|
|
}
|
|
|
|
if v, ok := d.GetOk("self"); ok && v.(bool) {
|
|
if sg.VPCID != nil && *sg.VPCID != "" {
|
|
groups[*sg.GroupID] = true
|
|
} else {
|
|
groups[*sg.GroupName] = true
|
|
}
|
|
}
|
|
|
|
if len(groups) > 0 {
|
|
perm.UserIDGroupPairs = make([]*ec2.UserIDGroupPair, len(groups))
|
|
// build string list of group name/ids
|
|
var gl []string
|
|
for k, _ := range groups {
|
|
gl = append(gl, k)
|
|
}
|
|
|
|
for i, name := range gl {
|
|
ownerId, id := "", name
|
|
if items := strings.Split(id, "/"); len(items) > 1 {
|
|
ownerId, id = items[0], items[1]
|
|
}
|
|
|
|
perm.UserIDGroupPairs[i] = &ec2.UserIDGroupPair{
|
|
GroupID: aws.String(id),
|
|
UserID: aws.String(ownerId),
|
|
}
|
|
|
|
if sg.VPCID == nil || *sg.VPCID == "" {
|
|
perm.UserIDGroupPairs[i].GroupID = nil
|
|
perm.UserIDGroupPairs[i].GroupName = aws.String(id)
|
|
perm.UserIDGroupPairs[i].UserID = nil
|
|
}
|
|
}
|
|
}
|
|
|
|
if raw, ok := d.GetOk("cidr_blocks"); ok {
|
|
list := raw.([]interface{})
|
|
perm.IPRanges = make([]*ec2.IPRange, len(list))
|
|
for i, v := range list {
|
|
perm.IPRanges[i] = &ec2.IPRange{CIDRIP: aws.String(v.(string))}
|
|
}
|
|
}
|
|
|
|
return &perm
|
|
}
|