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cognitouserpoolconfig.yaml
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AWSTemplateFormatVersion: 2010-09-09
Description: >
This template updates a cognito user pool client with a domain and app configuration
Parameters:
CloudFrontUrl:
Type: String
Description: Url of the base CF distro web app used by callbacks within the user pool
Default: ''
WebAppUrl:
Type: String
Description: Url of the target web app (hosting page) )used by callbacks within the user pool
Default: ''
WebAppPath:
Type: String
Description: 'Path to reach top level page in within the WebAppUrl. ie: /index.html'
Default: '/index.html'
CodeBuildProjectName:
Type: String
Description: 'CodeBuildProjectName to update environment configuration'
CognitoUserPool:
Type: String
Description: Cognito UserPool Id
CognitoUserPoolClient:
Type: String
Description: Cognito UserPool Client Id
Timestamp:
Type: Number
Description: >
This is a required parameter.
VpcSubnetId:
Type: String
Default: ''
Description: ID of a VPC subnet where all Lambda functions will run, only used if you need Lambda to run in a VPC
VpcSecurityGroupId:
Type: String
Default: ''
Description: ID of a security group where all Lambda functions will run, only used if you need Lambda to run in a VPC
Conditions:
NeedsVpc: !And [ !Not [ !Equals [!Ref VpcSubnetId, ''] ], !Not [ !Equals [!Ref VpcSecurityGroupId, ''] ] ]
Resources:
CognitoUserPoolDomain:
Type: Custom::CognitouserPoolDomain
Properties:
ServiceToken: !GetAtt CognitoUserPoolDomainFunction.Arn
CognitoUserPoolDomainFunction:
Type: AWS::Lambda::Function
Properties:
VpcConfig:
!If
- NeedsVpc
-
SecurityGroupIds:
- !Ref VpcSecurityGroupId
SubnetIds:
- !Ref VpcSubnetId
- !Ref "AWS::NoValue"
Handler: index.handler
Role: !GetAtt CognitoUserPoolDomainExecutionRole.Arn
Runtime: python3.10
Timeout: 300
TracingConfig:
Mode: Active
Code:
ZipFile: !Sub |
from __future__ import print_function
import json
import boto3
import cfnresponse
import time
def handler(event, context):
print(json.dumps(event))
stackname = '${CleanStackName.CleanStackNameValue}'[0:50]
id = stackname + '${AWS::AccountId}'
id = id.lower().replace("cognito","")
print('final id: ' + id)
if (event["RequestType"] == "Delete"):
try:
deleteDomain(id)
except Exception as e:
print("Exception thrown: %s" % str(e))
pass
elif (event["RequestType"] == "Create"):
try:
name = createDomain(id)
print('name: ' + name)
fullname = name + '.auth.' + '${AWS::Region}' + '.amazoncognito.com'
print('fullname: ' + fullname)
updateCodeBuildEnvironment('${CodeBuildProjectName}', fullname)
except Exception as e:
print("Exception thrown: %s" % str(e))
pass
else:
print("RequestType %s, nothing to do" % event["RequestType"])
time.sleep(30) # pause for CloudWatch logs
print('Done')
responseData={"domainid":id}
try:
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData, id)
except Exception as e:
print("Exception thrown in cfnresponse: %s" % str(e))
pass
def deleteDomain(stackName):
normalized = stackName.lower()
print("Deleting domain %s" % normalized)
client = boto3.client('cognito-idp')
response = client.delete_user_pool_domain(
Domain=normalized,
UserPoolId='${CognitoUserPool}'
)
return response
def createDomain(stackName):
normalized = stackName.lower()
print("Creating domain %s" % normalized)
client = boto3.client('cognito-idp')
response = client.create_user_pool_domain(
Domain=normalized,
UserPoolId='${CognitoUserPool}'
)
return normalized
def updateCodeBuildEnvironment(projectname, domainname):
print("Updating codebuild project %s" % projectname)
client = boto3.client('codebuild')
data = client.batch_get_projects(
names=[
projectname
]
)
projects = data.get('projects')
project = projects[0]
environment = project.get('environment')
variables = environment.get('environmentVariables')
updated = False
for element in variables :
if element.get('name') == 'APP_DOMAIN_NAME':
element.update({'value': domainname})
updated = True
if not updated:
item = {
'name': 'APP_DOMAIN_NAME',
'value': domainname,
'type': 'PLAINTEXT'
}
variables.append(item)
response = client.update_project(
name=projectname,
environment=environment
)
response = client.start_build(
projectName=projectname
)
return response
CognitoUserPoolDomainExecutionRole:
Type: AWS::IAM::Role
Properties:
Path: /
ManagedPolicyArns:
!If
- NeedsVpc
-
- "arn:aws:iam::aws:policy/service-role/AWSLambdaVPCAccessExecutionRole"
- !Ref "AWS::NoValue"
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Principal:
Service:
- lambda.amazonaws.com
Effect: Allow
Action:
- sts:AssumeRole
Policies:
- PolicyName: LogsForLambda
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- logs:CreateLogGroup
- logs:CreateLogStream
- logs:PutLogEvents
Resource:
- !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/aws/lambda/*"
- !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/aws/lambda/*:*"
- PolicyName: CognitoAuth
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- cognito-sync:*
- cognito-identity:*
- cognito-idp:*
Resource:
- !Sub "arn:aws:cognito-idp:${AWS::Region}:${AWS::AccountId}:userpool/${CognitoUserPool}"
- PolicyName: CodeBuildUpdate
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- codebuild:BatchGetProjects
- codebuild:UpdateProject
- codebuild:StartBuild
Resource:
- !Sub "arn:aws:codebuild:${AWS::Region}:${AWS::AccountId}:project/${CodeBuildProjectName}"
- PolicyName: XRay
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- xray:PutTraceSegments
- xray:PutTelemetryRecords
Resource:
- "*"
- PolicyName: AllowVPCSupport
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- ec2:DescribeNetworkInterfaces
- ec2:CreateNetworkInterface
- ec2:DeleteNetworkInterface
Resource: "*"
CognitoUserPoolUpdates:
Type: Custom::CognitoUserPoolUpdates
Properties:
ServiceToken: !GetAtt CognitoUserPoolUpdatesFunction.Arn
CloudFrontUrl: !Ref CloudFrontUrl
WebAppUrl: !Ref WebAppUrl
WebAppPath: !Ref WebAppPath
CodeBuildProjectName: !Ref CodeBuildProjectName
CognitoUserPool: !Ref CognitoUserPool
CognitoUserPoolClient: !Ref CognitoUserPoolClient
Timestamp: !Ref Timestamp
CognitoUserPoolUpdatesFunction:
Type: AWS::Lambda::Function
Properties:
VpcConfig:
!If
- NeedsVpc
-
SecurityGroupIds:
- !Ref VpcSecurityGroupId
SubnetIds:
- !Ref VpcSubnetId
- !Ref "AWS::NoValue"
Handler: index.handler
Role: !GetAtt CognitoUserPoolDomainExecutionRole.Arn
Runtime: python3.10
Timeout: 300
Environment:
Variables:
TIMESTAMP: !Ref Timestamp
TracingConfig:
Mode: Active
Code:
ZipFile: !Sub |
from __future__ import print_function
import json
import boto3
import cfnresponse
import time
def handler(event, context):
print(json.dumps(event))
if (event["RequestType"] == "Create" or event["RequestType"] == "Update"):
try:
updatePool("${CleanStackName.CleanStackNameValue}")
except Exception as e:
print("Exception thrown: %s" % str(e))
pass
else:
print("RequestType %s, nothing to do" % event["RequestType"])
time.sleep(30) # pause for CloudWatch logs
print('Done')
responseData={"Data":"OK"}
try:
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData)
except Exception as e:
print("Exception thrown in cfnresponse: %s" % str(e))
pass
def updatePool(stackName):
normalized = stackName.lower()
print("Updating Pool domain %s" % normalized)
callbackURLs=[
'${CloudFrontUrl}/index.html?loggedin=yes',
'${CloudFrontUrl}/parent.html?loggedin=yes'
]
logoutURLs=[
'${CloudFrontUrl}/index.html?loggedout=yes',
'${CloudFrontUrl}/parent.html?loggedout=yes'
]
# Add CallBack and Logout URLs for specified WebApp, if specified
# Allow multiple paths under same webAppUrl - comma separated
# If either WebAppUrl or WebAppPath are upper or mixed case, add a
# lowercase variant to help avoid redirect failures due to case mismatch
webAppUrl='${WebAppUrl}'
webAppPaths = [x.strip() for x in '${WebAppPath}'.split(',')]
if webAppUrl:
for webAppPath in webAppPaths:
fullUrl=f'{webAppUrl}{webAppPath}'
callbackURLs.insert(0,'%s?loggedin=yes' % fullUrl)
logoutURLs.insert(0,'%s?loggedout=yes' % fullUrl)
if (fullUrl != fullUrl.lower()):
callbackURLs.insert(0,'%s?loggedin=yes' % fullUrl.lower())
logoutURLs.insert(0,'%s?loggedout=yes' % fullUrl.lower())
client = boto3.client('cognito-idp')
currentClientConfig = client.describe_user_pool_client(
UserPoolId='${CognitoUserPool}',
ClientId='${CognitoUserPoolClient}'
)
supportedIDProviders = currentClientConfig.get('UserPoolClient').get('SupportedIdentityProviders')
if not supportedIDProviders:
supportedIDProviders = list()
if len(supportedIDProviders) == 0:
supportedIDProviders.append('COGNITO')
print(supportedIDProviders)
response = client.update_user_pool_client(
UserPoolId='${CognitoUserPool}',
ClientId='${CognitoUserPoolClient}',
ClientName=normalized,
RefreshTokenValidity=365,
CallbackURLs=callbackURLs,
LogoutURLs=logoutURLs,
SupportedIdentityProviders=supportedIDProviders,
AllowedOAuthFlows=[
'code',
],
AllowedOAuthScopes=[
'phone', 'email', 'openid', 'profile'
],
AllowedOAuthFlowsUserPoolClient=True
)
CleanStackNameExecutionRole:
Type: AWS::IAM::Role
Properties:
Path: /
ManagedPolicyArns:
!If
- NeedsVpc
-
- "arn:aws:iam::aws:policy/service-role/AWSLambdaVPCAccessExecutionRole"
- !Ref "AWS::NoValue"
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Principal:
Service:
- lambda.amazonaws.com
Effect: Allow
Action:
- sts:AssumeRole
Policies:
- PolicyName: LogsForLambda
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- logs:CreateLogGroup
- logs:CreateLogStream
- logs:PutLogEvents
Resource:
- !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/aws/lambda/*"
- !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/aws/lambda/*:*"
- PolicyName: XRay
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- xray:PutTraceSegments
- xray:PutTelemetryRecords
Resource: "*"
- PolicyName: AllowVPCSupport
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- ec2:DescribeNetworkInterfaces
- ec2:CreateNetworkInterface
- ec2:DeleteNetworkInterface
Resource: "*"
CleanStackName:
DependsOn: CleanStackNameExecutionRole
Type: Custom::CleanStackName
Properties:
ServiceToken: !GetAtt CleanStackNameFunction.Arn
CleanStackNameFunction:
Type: AWS::Lambda::Function
Properties:
VpcConfig:
!If
- NeedsVpc
-
SecurityGroupIds:
- !Ref VpcSecurityGroupId
SubnetIds:
- !Ref VpcSubnetId
- !Ref "AWS::NoValue"
Handler: index.handler
Role: !GetAtt CleanStackNameExecutionRole.Arn
Runtime: python3.10
Timeout: 300
TracingConfig:
Mode: Active
Code:
ZipFile: !Sub |
from __future__ import print_function
import json
import boto3
import cfnresponse
import time
def handler(event, context):
print(json.dumps(event))
if (event["RequestType"] == "Delete"):
responseData={"Data":"OK"}
try:
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData)
except Exception as e:
print("Exception thrown in cfnresponse: %s" % str(e))
pass
else:
val = enforceSyntax("${AWS::StackName}")
time.sleep(10) # pause for CloudWatch logs
responseData={"Data":"OK","CleanStackNameValue":val}
try:
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData)
except Exception as e:
print("Exception thrown in cfnresponse: %s" % str(e))
pass
def enforceSyntax(val):
badChars=['0','1','2','3','4','5','6','7','8','9','-']
goodChars=['a','b','c','d','e','f','g','h','i','j','k']
i=0
res = val
for b in badChars:
res = res.replace(b,goodChars[i])
i +=1
return res