provider/aws: Add CORS settings to S3 bucket

builtin/providers/aws/resource_aws_s3_bucket.go

@@ -41,6 +41,39 @@ func resourceAwsS3Bucket() *schema.Resource {
 				StateFunc: normalizeJson,
 			},
 
+			"cors_rule": &schema.Schema{
+				Type:     schema.TypeList,
+				Optional: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"allowed_headers": &schema.Schema{
+							Type:     schema.TypeList,
+							Optional: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"allowed_methods": &schema.Schema{
+							Type:     schema.TypeList,
+							Required: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"allowed_origins": &schema.Schema{
+							Type:     schema.TypeList,
+							Required: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"expose_headers": &schema.Schema{
+							Type:     schema.TypeList,
+							Optional: true,
+							Elem:     &schema.Schema{Type: schema.TypeString},
+						},
+						"max_age_seconds": &schema.Schema{
+							Type:     schema.TypeInt,
+							Optional: true,
+						},
+					},
+				},
+			},
+
 			"website": &schema.Schema{
 				Type:     schema.TypeList,
 				Optional: true,
@@ -168,6 +201,12 @@ func resourceAwsS3BucketUpdate(d *schema.ResourceData, meta interface{}) error {
 		}
 	}
 
+	if d.HasChange("cors_rule") {
+		if err := resourceAwsS3BucketCorsUpdate(s3conn, d); err != nil {
+			return err
+		}
+	}
+
 	if d.HasChange("website") {
 		if err := resourceAwsS3BucketWebsiteUpdate(s3conn, d); err != nil {
 			return err
@@ -221,6 +260,25 @@ func resourceAwsS3BucketRead(d *schema.ResourceData, meta interface{}) error {
 		}
 	}
 
+	// Read the CORS
+	cors, err := s3conn.GetBucketCors(&s3.GetBucketCorsInput{
+		Bucket: aws.String(d.Id()),
+	})
+	log.Printf("[DEBUG] S3 bucket: %s, read CORS: %v", d.Id(), cors)
+	if err != nil {
+		rules := make([]map[string]interface{}, 0, len(cors.CORSRules))
+		for _, ruleObject := range cors.CORSRules {
+			rule := make(map[string]interface{})
+			rule["allowed_headers"] = ruleObject.AllowedHeaders
+			rule["allowed_methods"] = ruleObject.AllowedMethods
+			rule["allowed_origins"] = ruleObject.AllowedOrigins
+			rule["expose_headers"] = ruleObject.ExposeHeaders
+			rule["max_age_seconds"] = ruleObject.MaxAgeSeconds
+			rules = append(rules, rule)
+		}
+		d.Set("cors_rule", rules)
+	}
+
 	// Read the website configuration
 	ws, err := s3conn.GetBucketWebsite(&s3.GetBucketWebsiteInput{
 		Bucket: aws.String(d.Id()),
@@ -400,6 +458,65 @@ func resourceAwsS3BucketPolicyUpdate(s3conn *s3.S3, d *schema.ResourceData) erro
 	return nil
 }
 
+func resourceAwsS3BucketCorsUpdate(s3conn *s3.S3, d *schema.ResourceData) error {
+	bucket := d.Get("bucket").(string)
+	rawCors := d.Get("cors_rule").([]interface{})
+
+	if len(rawCors) == 0 {
+		// Delete CORS
+		log.Printf("[DEBUG] S3 bucket: %s, delete CORS", bucket)
+		_, err := s3conn.DeleteBucketCors(&s3.DeleteBucketCorsInput{
+			Bucket: aws.String(bucket),
+		})
+		if err != nil {
+			return fmt.Errorf("Error deleting S3 CORS: %s", err)
+		}
+	} else {
+		// Put CORS
+		rules := make([]*s3.CORSRule, 0, len(rawCors))
+		for _, cors := range rawCors {
+			corsMap := cors.(map[string]interface{})
+			r := &s3.CORSRule{}
+			for k, v := range corsMap {
+				log.Printf("[DEBUG] S3 bucket: %s, put CORS: %#v, %#v", bucket, k, v)
+				if k == "max_age_seconds" {
+					r.MaxAgeSeconds = aws.Int64(int64(v.(int)))
+				} else {
+					vMap := make([]*string, len(v.([]interface{})))
+					for i, vv := range v.([]interface{}) {
+						str := vv.(string)
+						vMap[i] = aws.String(str)
+					}
+					switch k {
+					case "allowed_headers":
+						r.AllowedHeaders = vMap
+					case "allowed_methods":
+						r.AllowedMethods = vMap
+					case "allowed_origins":
+						r.AllowedOrigins = vMap
+					case "expose_headers":
+						r.ExposeHeaders = vMap
+					}
+				}
+			}
+			rules = append(rules, r)
+		}
+		corsInput := &s3.PutBucketCorsInput{
+			Bucket: aws.String(bucket),
+			CORSConfiguration: &s3.CORSConfiguration{
+				CORSRules: rules,
+			},
+		}
+		log.Printf("[DEBUG] S3 bucket: %s, put CORS: %#v", bucket, corsInput)
+		_, err := s3conn.PutBucketCors(corsInput)
+		if err != nil {
+			return fmt.Errorf("Error putting S3 CORS: %s", err)
+		}
+	}
+
+	return nil
+}
+
 func resourceAwsS3BucketWebsiteUpdate(s3conn *s3.S3, d *schema.ResourceData) error {
 	ws := d.Get("website").([]interface{})
 

builtin/providers/aws/resource_aws_s3_bucket_test.go

@@ -188,6 +188,34 @@ func TestAccAWSS3Bucket_Versioning(t *testing.T) {
 	})
 }
 
+func TestAccAWSS3Bucket_Cors(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSS3BucketDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccAWSS3BucketConfigWithCORS,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSS3BucketExists("aws_s3_bucket.bucket"),
+					testAccCheckAWSS3BucketCors(
+						"aws_s3_bucket.bucket",
+						[]*s3.CORSRule{
+							&s3.CORSRule{
+								AllowedHeaders: []*string{aws.String("*")},
+								AllowedMethods: []*string{aws.String("PUT"), aws.String("POST")},
+								AllowedOrigins: []*string{aws.String("https://www.example.com")},
+								ExposeHeaders:  []*string{aws.String("x-amz-server-side-encryption"), aws.String("ETag")},
+								MaxAgeSeconds:  aws.Int64(3000),
+							},
+						},
+					),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckAWSS3BucketDestroy(s *terraform.State) error {
 	conn := testAccProvider.Meta().(*AWSClient).s3conn
 
@@ -370,6 +398,26 @@ func testAccCheckAWSS3BucketVersioning(n string, versioningStatus string) resour
 		return nil
 	}
 }
+func testAccCheckAWSS3BucketCors(n string, corsRules []*s3.CORSRule) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, _ := s.RootModule().Resources[n]
+		conn := testAccProvider.Meta().(*AWSClient).s3conn
+
+		out, err := conn.GetBucketCors(&s3.GetBucketCorsInput{
+			Bucket: aws.String(rs.Primary.ID),
+		})
+
+		if err != nil {
+			return fmt.Errorf("GetBucketCors error: %v", err)
+		}
+
+		if !reflect.DeepEqual(out.CORSRules, corsRules) {
+			return fmt.Errorf("bad error cors rule, expected: %v, got %v", corsRules, out.CORSRules)
+		}
+
+		return nil
+	}
+}
 
 // These need a bit of randomness as the name can only be used once globally
 // within AWS
@@ -452,3 +500,17 @@ resource "aws_s3_bucket" "bucket" {
 	}
 }
 `, randInt)
+
+var testAccAWSS3BucketConfigWithCORS = fmt.Sprintf(`
+resource "aws_s3_bucket" "bucket" {
+	bucket = "tf-test-bucket-%d"
+	acl = "public-read"
+	cors_rule {
+			allowed_headers = ["*"]
+			allowed_methods = ["PUT","POST"]
+			allowed_origins = ["https://www.example.com"]
+			expose_headers = ["x-amz-server-side-encryption","ETag"]
+			max_age_seconds = 3000
+	}
+}
+`, randInt)

website/source/docs/providers/aws/r/s3_bucket.html.markdown

@@ -41,6 +41,23 @@ resource "aws_s3_bucket" "b" {
 }
 ```
 
+### Using CORS
+
+```
+resource "aws_s3_bucket" "b" {
+    bucket = "s3-website-test.hashicorp.com"
+    acl = "public-read"
+
+    cors_rule {
+        allowed_headers = ["*"]
+        allowed_methods = ["PUT","POST"]
+        allowed_origins = ["https://s3-website-test.hashicorp.com"]
+        expose_headers = ["ETag"]
+        max_age_seconds = 3000
+    }
+}
+```
+
 ### Using versioning
 
 ```
@@ -64,6 +81,7 @@ The following arguments are supported:
 * `tags` - (Optional) A mapping of tags to assign to the bucket.
 * `force_destroy` - (Optional, Default:false ) A boolean that indicates all objects should be deleted from the bucket so that the bucket can be destroyed without error. These objects are *not* recoverable.
 * `website` - (Optional) A website object (documented below).
+* `cors_rule` - (Optional) A rule of [Cross-Origin Resource Sharing](http://docs.aws.amazon.com/AmazonS3/latest/dev/cors.html) (documented below).
 * `versioning` - (Optional) A state of [versioning](http://docs.aws.amazon.com/AmazonS3/latest/dev/Versioning.html) (documented below)
 
 The website object supports the following:
@@ -72,6 +90,14 @@ The website object supports the following:
 * `error_document` - (Optional) An absolute path to the document to return in case of a 4XX error.
 * `redirect_all_requests_to` - (Optional) A hostname to redirect all website requests for this bucket to.
 
+The CORS supports the following:
+
+* `allowed_headers` (Optional) Specifies which headers are allowed.
+* `allowed_methods` (Required) Specifies which methods are allowed. Can be `GET`, `PUT`, `POST`, `DELETE` or `HEAD`.
+* `allowed_origins` (Required) Specifies which origins are allowed.
+* `expose_headers` (Optional) Specifies expose header in the response.
+* `max_age_seconds` (Optional) Specifies time in seconds that browser can cache the response for a preflight request.
+
 The versioning supports the following:
 
 * `enabled` - (Optional) Enable versioning. Once you version-enable a bucket, it can never return to an unversioned state. You can, however, suspend versioning on that bucket.