forked from hashicorp/terraform
-
Notifications
You must be signed in to change notification settings - Fork 2
/
resource_cloudstack_egress_firewall.go
508 lines (414 loc) · 12.4 KB
/
resource_cloudstack_egress_firewall.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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
package cloudstack
import (
"bytes"
"fmt"
"regexp"
"sort"
"strconv"
"strings"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/schema"
"github.com/xanzy/go-cloudstack/cloudstack"
)
func resourceCloudStackEgressFirewall() *schema.Resource {
return &schema.Resource{
Create: resourceCloudStackEgressFirewallCreate,
Read: resourceCloudStackEgressFirewallRead,
Update: resourceCloudStackEgressFirewallUpdate,
Delete: resourceCloudStackEgressFirewallDelete,
Schema: map[string]*schema.Schema{
"network": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"managed": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: false,
},
"rule": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"source_cidr": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"protocol": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"icmp_type": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
},
"icmp_code": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
},
"ports": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: func(v interface{}) int {
return hashcode.String(v.(string))
},
},
"uuids": &schema.Schema{
Type: schema.TypeMap,
Computed: true,
},
},
},
Set: resourceCloudStackEgressFirewallRuleHash,
},
},
}
}
func resourceCloudStackEgressFirewallCreate(d *schema.ResourceData, meta interface{}) error {
cs := meta.(*cloudstack.CloudStackClient)
// Make sure all required parameters are there
if err := verifyEgressFirewallParams(d); err != nil {
return err
}
// Retrieve the network UUID
networkid, e := retrieveUUID(cs, "network", d.Get("network").(string))
if e != nil {
return e.Error()
}
// We need to set this upfront in order to be able to save a partial state
d.SetId(networkid)
// Create all rules that are configured
if rs := d.Get("rule").(*schema.Set); rs.Len() > 0 {
// Create an empty schema.Set to hold all rules
rules := &schema.Set{
F: resourceCloudStackEgressFirewallRuleHash,
}
for _, rule := range rs.List() {
// Create a single rule
err := resourceCloudStackEgressFirewallCreateRule(d, meta, rule.(map[string]interface{}))
// We need to update this first to preserve the correct state
rules.Add(rule)
d.Set("rule", rules)
if err != nil {
return err
}
}
}
return resourceCloudStackEgressFirewallRead(d, meta)
}
func resourceCloudStackEgressFirewallCreateRule(
d *schema.ResourceData, meta interface{}, rule map[string]interface{}) error {
cs := meta.(*cloudstack.CloudStackClient)
uuids := rule["uuids"].(map[string]interface{})
// Make sure all required rule parameters are there
if err := verifyEgressFirewallRuleParams(d, rule); err != nil {
return err
}
// Create a new parameter struct
p := cs.Firewall.NewCreateEgressFirewallRuleParams(d.Id(), rule["protocol"].(string))
// Set the CIDR list
p.SetCidrlist([]string{rule["source_cidr"].(string)})
// If the protocol is ICMP set the needed ICMP parameters
if rule["protocol"].(string) == "icmp" {
p.SetIcmptype(rule["icmp_type"].(int))
p.SetIcmpcode(rule["icmp_code"].(int))
r, err := cs.Firewall.CreateEgressFirewallRule(p)
if err != nil {
return err
}
uuids["icmp"] = r.Id
rule["uuids"] = uuids
}
// If protocol is not ICMP, loop through all ports
if rule["protocol"].(string) != "icmp" {
if ps := rule["ports"].(*schema.Set); ps.Len() > 0 {
// Create an empty schema.Set to hold all processed ports
ports := &schema.Set{
F: func(v interface{}) int {
return hashcode.String(v.(string))
},
}
for _, port := range ps.List() {
re := regexp.MustCompile(`^(\d+)(?:-(\d+))?$`)
m := re.FindStringSubmatch(port.(string))
startPort, err := strconv.Atoi(m[1])
if err != nil {
return err
}
endPort := startPort
if m[2] != "" {
endPort, err = strconv.Atoi(m[2])
if err != nil {
return err
}
}
p.SetStartport(startPort)
p.SetEndport(endPort)
r, err := cs.Firewall.CreateEgressFirewallRule(p)
if err != nil {
return err
}
ports.Add(port)
rule["ports"] = ports
uuids[port.(string)] = r.Id
rule["uuids"] = uuids
}
}
}
return nil
}
func resourceCloudStackEgressFirewallRead(d *schema.ResourceData, meta interface{}) error {
cs := meta.(*cloudstack.CloudStackClient)
// Create an empty schema.Set to hold all rules
rules := &schema.Set{
F: resourceCloudStackEgressFirewallRuleHash,
}
// Read all rules that are configured
if rs := d.Get("rule").(*schema.Set); rs.Len() > 0 {
for _, rule := range rs.List() {
rule := rule.(map[string]interface{})
uuids := rule["uuids"].(map[string]interface{})
if rule["protocol"].(string) == "icmp" {
id, ok := uuids["icmp"]
if !ok {
continue
}
// Get the rule
r, count, err := cs.Firewall.GetEgressFirewallRuleByID(id.(string))
// If the count == 0, there is no object found for this UUID
if err != nil {
if count == 0 {
delete(uuids, "icmp")
continue
}
return err
}
// Update the values
rule["source_cidr"] = r.Cidrlist
rule["protocol"] = r.Protocol
rule["icmp_type"] = r.Icmptype
rule["icmp_code"] = r.Icmpcode
rules.Add(rule)
}
// If protocol is not ICMP, loop through all ports
if rule["protocol"].(string) != "icmp" {
if ps := rule["ports"].(*schema.Set); ps.Len() > 0 {
// Create an empty schema.Set to hold all ports
ports := &schema.Set{
F: func(v interface{}) int {
return hashcode.String(v.(string))
},
}
// Loop through all ports and retrieve their info
for _, port := range ps.List() {
id, ok := uuids[port.(string)]
if !ok {
continue
}
// Get the rule
r, count, err := cs.Firewall.GetEgressFirewallRuleByID(id.(string))
if err != nil {
if count == 0 {
delete(uuids, port.(string))
continue
}
return err
}
// Update the values
rule["source_cidr"] = r.Cidrlist
rule["protocol"] = r.Protocol
ports.Add(port)
}
// If there is at least one port found, add this rule to the rules set
if ports.Len() > 0 {
rule["ports"] = ports
rules.Add(rule)
}
}
}
}
}
// If this is a managed firewall, add all unknown rules into a single dummy rule
managed := d.Get("managed").(bool)
if managed {
// Get all the rules from the running environment
p := cs.Firewall.NewListEgressFirewallRulesParams()
p.SetNetworkid(d.Id())
p.SetListall(true)
r, err := cs.Firewall.ListEgressFirewallRules(p)
if err != nil {
return err
}
// Add all UUIDs to the uuids map
uuids := make(map[string]interface{}, len(r.EgressFirewallRules))
for _, r := range r.EgressFirewallRules {
uuids[r.Id] = r.Id
}
// Delete all expected UUIDs from the uuids map
for _, rule := range rules.List() {
rule := rule.(map[string]interface{})
for _, id := range rule["uuids"].(map[string]interface{}) {
delete(uuids, id.(string))
}
}
if len(uuids) > 0 {
// Make a dummy rule to hold all unknown UUIDs
rule := map[string]interface{}{
"source_cidr": "N/A",
"protocol": "N/A",
"uuids": uuids,
}
// Add the dummy rule to the rules set
rules.Add(rule)
}
}
if rules.Len() > 0 {
d.Set("rule", rules)
} else if !managed {
d.SetId("")
}
return nil
}
func resourceCloudStackEgressFirewallUpdate(d *schema.ResourceData, meta interface{}) error {
// Make sure all required parameters are there
if err := verifyEgressFirewallParams(d); err != nil {
return err
}
// Check if the rule set as a whole has changed
if d.HasChange("rule") {
o, n := d.GetChange("rule")
ors := o.(*schema.Set).Difference(n.(*schema.Set))
nrs := n.(*schema.Set).Difference(o.(*schema.Set))
// Now first loop through all the old rules and delete any obsolete ones
for _, rule := range ors.List() {
// Delete the rule as it no longer exists in the config
err := resourceCloudStackEgressFirewallDeleteRule(d, meta, rule.(map[string]interface{}))
if err != nil {
return err
}
}
// Make sure we save the state of the currently configured rules
rules := o.(*schema.Set).Intersection(n.(*schema.Set))
d.Set("rule", rules)
// Then loop through al the currently configured rules and create the new ones
for _, rule := range nrs.List() {
// When succesfully deleted, re-create it again if it still exists
err := resourceCloudStackEgressFirewallCreateRule(
d, meta, rule.(map[string]interface{}))
// We need to update this first to preserve the correct state
rules.Add(rule)
d.Set("rule", rules)
if err != nil {
return err
}
}
}
return resourceCloudStackEgressFirewallRead(d, meta)
}
func resourceCloudStackEgressFirewallDelete(d *schema.ResourceData, meta interface{}) error {
// Delete all rules
if rs := d.Get("rule").(*schema.Set); rs.Len() > 0 {
for _, rule := range rs.List() {
// Delete a single rule
err := resourceCloudStackEgressFirewallDeleteRule(d, meta, rule.(map[string]interface{}))
// We need to update this first to preserve the correct state
d.Set("rule", rs)
if err != nil {
return err
}
}
}
return nil
}
func resourceCloudStackEgressFirewallDeleteRule(
d *schema.ResourceData, meta interface{}, rule map[string]interface{}) error {
cs := meta.(*cloudstack.CloudStackClient)
uuids := rule["uuids"].(map[string]interface{})
for k, id := range uuids {
// We don't care about the count here, so just continue
if k == "#" {
continue
}
// Create the parameter struct
p := cs.Firewall.NewDeleteEgressFirewallRuleParams(id.(string))
// Delete the rule
if _, err := cs.Firewall.DeleteEgressFirewallRule(p); err != nil {
// This is a very poor way to be told the UUID does no longer exist :(
if strings.Contains(err.Error(), fmt.Sprintf(
"Invalid parameter id value=%s due to incorrect long value format, "+
"or entity does not exist", id.(string))) {
delete(uuids, k)
continue
}
return err
}
// Delete the UUID of this rule
delete(uuids, k)
}
// Update the UUIDs
rule["uuids"] = uuids
return nil
}
func resourceCloudStackEgressFirewallRuleHash(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf(
"%s-%s-", m["source_cidr"].(string), m["protocol"].(string)))
if v, ok := m["icmp_type"]; ok {
buf.WriteString(fmt.Sprintf("%d-", v.(int)))
}
if v, ok := m["icmp_code"]; ok {
buf.WriteString(fmt.Sprintf("%d-", v.(int)))
}
// 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 v, ok := m["ports"]; ok {
vs := v.(*schema.Set).List()
s := make([]string, len(vs))
for i, raw := range vs {
s[i] = raw.(string)
}
sort.Strings(s)
for _, v := range s {
buf.WriteString(fmt.Sprintf("%s-", v))
}
}
return hashcode.String(buf.String())
}
func verifyEgressFirewallParams(d *schema.ResourceData) error {
managed := d.Get("managed").(bool)
_, rules := d.GetOk("rule")
if !rules && !managed {
return fmt.Errorf(
"You must supply at least one 'rule' when not using the 'managed' firewall feature")
}
return nil
}
func verifyEgressFirewallRuleParams(d *schema.ResourceData, rule map[string]interface{}) error {
protocol := rule["protocol"].(string)
if protocol != "tcp" && protocol != "udp" && protocol != "icmp" {
return fmt.Errorf(
"%s is not a valid protocol. Valid options are 'tcp', 'udp' and 'icmp'", protocol)
}
if protocol == "icmp" {
if _, ok := rule["icmp_type"]; !ok {
return fmt.Errorf(
"Parameter icmp_type is a required parameter when using protocol 'icmp'")
}
if _, ok := rule["icmp_code"]; !ok {
return fmt.Errorf(
"Parameter icmp_code is a required parameter when using protocol 'icmp'")
}
} else {
if _, ok := rule["ports"]; !ok {
return fmt.Errorf(
"Parameter port is a required parameter when using protocol 'tcp' or 'udp'")
}
}
return nil
}