forked from hashicorp/terraform
/
resource_aws_waf_rule.go
201 lines (171 loc) · 5.11 KB
/
resource_aws_waf_rule.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
package aws
import (
"fmt"
"log"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/waf"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsWafRule() *schema.Resource {
return &schema.Resource{
Create: resourceAwsWafRuleCreate,
Read: resourceAwsWafRuleRead,
Update: resourceAwsWafRuleUpdate,
Delete: resourceAwsWafRuleDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"metric_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"predicates": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"negated": &schema.Schema{
Type: schema.TypeBool,
Required: true,
},
"data_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if len(value) > 128 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 128 characters", k))
}
return
},
},
"type": &schema.Schema{
Type: schema.TypeString,
Required: true,
ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if value != "IPMatch" && value != "ByteMatch" && value != "SqlInjectionMatch" && value != "SizeConstraint" && value != "XssMatch" {
errors = append(errors, fmt.Errorf(
"%q must be one of IPMatch | ByteMatch | SqlInjectionMatch | SizeConstraint | XssMatch", k))
}
return
},
},
},
},
},
},
}
}
func resourceAwsWafRuleCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
// ChangeToken
var ct *waf.GetChangeTokenInput
res, err := conn.GetChangeToken(ct)
if err != nil {
return fmt.Errorf("Error getting change token: %s", err)
}
params := &waf.CreateRuleInput{
ChangeToken: res.ChangeToken,
MetricName: aws.String(d.Get("metric_name").(string)),
Name: aws.String(d.Get("name").(string)),
}
resp, err := conn.CreateRule(params)
if err != nil {
return err
}
d.SetId(*resp.Rule.RuleId)
return resourceAwsWafRuleUpdate(d, meta)
}
func resourceAwsWafRuleRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
params := &waf.GetRuleInput{
RuleId: aws.String(d.Id()),
}
resp, err := conn.GetRule(params)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "WAFNonexistentItemException" {
log.Printf("[WARN] WAF Rule (%s) not found, error code (404)", d.Id())
d.SetId("")
return nil
}
return err
}
var predicates []map[string]interface{}
for _, predicateSet := range resp.Rule.Predicates {
predicate := map[string]interface{}{
"negated": *predicateSet.Negated,
"type": *predicateSet.Type,
"data_id": *predicateSet.DataId,
}
predicates = append(predicates, predicate)
}
d.Set("predicates", predicates)
d.Set("name", resp.Rule.Name)
d.Set("metric_name", resp.Rule.MetricName)
return nil
}
func resourceAwsWafRuleUpdate(d *schema.ResourceData, meta interface{}) error {
err := updateWafRuleResource(d, meta, waf.ChangeActionInsert)
if err != nil {
return fmt.Errorf("Error Updating WAF Rule: %s", err)
}
return resourceAwsWafRuleRead(d, meta)
}
func resourceAwsWafRuleDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
err := updateWafRuleResource(d, meta, waf.ChangeActionDelete)
if err != nil {
return fmt.Errorf("Error Removing WAF Rule Predicates: %s", err)
}
// ChangeToken
var ct *waf.GetChangeTokenInput
resp, err := conn.GetChangeToken(ct)
req := &waf.DeleteRuleInput{
ChangeToken: resp.ChangeToken,
RuleId: aws.String(d.Id()),
}
log.Printf("[INFO] Deleting WAF Rule")
_, err = conn.DeleteRule(req)
if err != nil {
return fmt.Errorf("Error deleting WAF Rule: %s", err)
}
return nil
}
func updateWafRuleResource(d *schema.ResourceData, meta interface{}, ChangeAction string) error {
conn := meta.(*AWSClient).wafconn
// ChangeToken
var ct *waf.GetChangeTokenInput
resp, err := conn.GetChangeToken(ct)
if err != nil {
return fmt.Errorf("Error getting change token: %s", err)
}
req := &waf.UpdateRuleInput{
ChangeToken: resp.ChangeToken,
RuleId: aws.String(d.Id()),
}
predicatesSet := d.Get("predicates").(*schema.Set)
for _, predicateI := range predicatesSet.List() {
predicate := predicateI.(map[string]interface{})
updatePredicate := &waf.RuleUpdate{
Action: aws.String(ChangeAction),
Predicate: &waf.Predicate{
Negated: aws.Bool(predicate["negated"].(bool)),
Type: aws.String(predicate["type"].(string)),
DataId: aws.String(predicate["data_id"].(string)),
},
}
req.Updates = append(req.Updates, updatePredicate)
}
_, err = conn.UpdateRule(req)
if err != nil {
return fmt.Errorf("Error Updating WAF Rule: %s", err)
}
return nil
}