On Nov 10, 2022 version 2 was released which no longer supports Ruby 2.5.
quickbooks-ruby | branch | ruby |
---|---|---|
1 | master | <= 2.5 |
2 | 2-stable | >= 2.6.0 |
Integration with Quickbooks Online via the Intuit Data Services v3 REST API.
This library communicates with the Quickbooks Data Services v3
API, documented at:
0.1.0
introduced a backwards-incompatible change in how boolean attributes are handled. As of 0.1.0
any boolean like:
xml_accessor :active?, :from => 'Active'
will be accessible via active?
. Thereby eliminating custom code like:
def active?
active.to_s == 'true'
end
Now a call to active?
that is not set will return nil
. Otherwise it return true
/ false
.
Moreover, there is no longer a getter method e.g. active
(without the trailing ?
).
This has been tested on 2.x
Ruby 1.9.x is not supported.
Gems:
oauth2
roxml
: Workhorse for (de)serializing objects between Ruby & XMLnokogiri
: XML parsingactive_model
: For validations
Add this line to your application's Gemfile:
gem 'quickbooks-ruby'
And then execute:
$ bundle
Or install it yourself as:
$ gem install quickbooks-ruby
An API app provides two sets of OAuth key for production and development. Since October 22, 2014, only Sandbox Companies are allowed to connected to the QBO via the development key. The end-point for sandbox mode is https://sandbox-quickbooks.api.intuit.com.
By default, the gem runs in production mode. If you prefer to develop / test the integration with the development key, you need to config the gem to run in sandbox mode:
Quickbooks.sandbox_mode = true
What follows is an example using Rails but the principles can be adapted to any other framework / pure Ruby.
Create a Rails initializer (config/initializers/quickbooks-ruby.rb
) with:
oauth_params = {
site: "https://appcenter.intuit.com/connect/oauth2",
authorize_url: "https://appcenter.intuit.com/connect/oauth2",
token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"
}
oauth2_client = OAuth2::Client.new(ENV['OAUTH_CLIENT_ID'], ENV['OAUTH_CLIENT_SECRET'], oauth_params)
Your Controller action (the grantUrl
above) should look like this:
def authenticate
redirect_uri = quickbooks_oauth_callback_url
grant_url = oauth2_client.auth_code.authorize_url(redirect_uri: redirect_uri, response_type: "code", state: SecureRandom.hex(12), scope: "com.intuit.quickbooks.accounting")
redirect_to grant_url
end
Where quickbooks_oauth_callback_url
is the absolute URL of your application that Intuit should send the user when authentication succeeds.
That action should look like:
def oauth_callback
if params[:state].present?
# use the state value to retrieve from your backend any information you need to identify the customer in your system
redirect_uri = quickbooks_oauth_callback_url
if resp = oauth2_client.auth_code.get_token(params[:code], redirect_uri: redirect_uri)
# save your tokens here. For example:
# quickbooks_credentials.update_attributes(access_token: resp.token, refresh_token: resp.refresh_token, realm_id: params[:realmId])
end
end
end
Your Redirect URI needs to be publicly accessible. If you are still in development and running everything via localhost
you will need to use a tool like Ngrok to expose your localhost to a public URL with HTTPS.
Most likely you will want to persist the OAuth access credentials so that users don't need to re-authorize your application in every session.
An example database table could have fields likes:
access_token text,
access_token_expires_at datetime,
refresh_token text,
refresh_token_expires_at datetime,
realm_id text
Once you have your user's OAuth access and refresh token string values you can create an access token object to issue requests:
qb_access_token = quickbooks_credentials.access_token
qb_refresh_token = quickbooks_credentials.refresh_token
access_token = OAuth2::AccessToken.new(oauth2_client, qb_access_token, refresh_token: qb_refresh_token)
Each access token is only valid for one hour. The access token and refresh token can be refreshed directly by using OAuth Client:
new_access_token_object = access_token.refresh!
The token must be assigned to a variable to prevent the loss of your new access token, which will void your credentials and a new set of credentials have to be acquired by authorizing the application again. You should then persist it to your storage.
Unauthorized (expired) access to the API will raise a OAuth2::Error
error.
For more information on access token expiration and refresh token expiration, please refer to the official documentation.
You will need to continuously refresh access tokens and ensure token validity. Access Tokens expire after 1 hour.
My personal architecture in a Rails application is similar to this:
# app/models/concerns/quickbooks_oauth.rb
module QuickbooksOauth
extend ActiveSupport::Concern
#== Instance Methods
def perform_authenticated_request(&block)
attempts = 0
begin
yield oauth_access_token
rescue OAuth2::Error, Quickbooks::AuthorizationFailure => ex
Rails.logger.info("QuickbooksOauth.perform: #{ex.message}")
# to prevent an infinite loop here keep a counter and bail out after N times...
attempts += 1
raise "QuickbooksOauth:ExceededAuthAttempts" if attempts >= 3
# check if its an invalid_grant first, but assume it is for now
refresh_token!
retry
end
end
def refresh_token!
t = oauth_access_token
refreshed = t.refresh!
if refreshed.params['x_refresh_token_expires_in'].to_i > 0
oauth2_refresh_token_expires_at = Time.now + refreshed.params['x_refresh_token_expires_in'].to_i.seconds
else
oauth2_refresh_token_expires_at = 100.days.from_now
end
update!(
oauth2_access_token: refreshed.token,
oauth2_access_token_expires_at: Time.at(refreshed.expires_at),
oauth2_refresh_token: refreshed.refresh_token,
oauth2_refresh_token_expires_at: oauth2_refresh_token_expires_at
)
end
def oauth_client
self.class.construct_oauth2_client
end
def oauth_access_token
OAuth2::AccessToken.new(oauth_client, oauth2_access_token, refresh_token: oauth2_refresh_token)
end
def consumer
oauth_access_token
end
module ClassMethods
def construct_oauth2_client
options = {
site: "https://appcenter.intuit.com/connect/oauth2",
authorize_url: "https://appcenter.intuit.com/connect/oauth2",
token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"
}
OAuth2::Client.new(ENV['INTUIT_OAUTH2_CLIENT_ID'], ENV['INTUIT_OAUTH2_CLIENT_SECRET'], options)
end
end
end
And then I have an IntuitAccount
model with attributes:
oauth2_access_token | text | | |
oauth2_access_token_expires_at | timestamp without time zone | | |
oauth2_refresh_token | text | | |
oauth2_refresh_token_expires_at | timestamp without time zone | | |
track_purchase_order_quantity | boolean | | not null | false
And then finally include this concern in the model:
class IntuitAccount < ActiveRecord::Base
include QuickbooksOauth
end
Pulled together usage is:
intuit_account = IntuitAccount.find(x)
intuit_account.perform_authenticated_request do |access_token|
# do something here, like
service = Quickbooks::Service::Customer.new
service.company_id = "123" # also known as RealmID
service.access_token = access_token # the OAuth Access Token you have from above
customers = service.query()
end
The general approach is you first instantiate a Service
object based on the entity you would like to retrieve. Lets retrieve a list of Customers:
service = Quickbooks::Service::Customer.new
service.company_id = "123" # also known as RealmID
service.access_token = access_token # the OAuth Access Token you have from above
# Equivalent to Quickbooks::Service::Customer.new(:company_id => "123", :access_token => access_token)
customers = service.query() # Called without args you get the first page of results
# yields
customers.entries = [ .. array of Quickbooks::Model::Customer objects .. ]
customers.start_position = 1 # the current position in the paginated set
customers.max_results = 20 # the maximum number of results in this query set
Under the hood Intuit uses a simple SQL-like dialect for retrieving objects, the above no-arg use of query()
issued a Select * From Customer
.
You can issue your own query by passing the complete and valid query as the first argument:
customers.query("Select Id, GivenName From Customer")
Each Entity has different fields you can retrieve & filter on. Refer to Intuit documentation for details.
Do not pass pagination parameters in your query - pass them as additional options, using :page
and :per_page
:
# to use the default query
customers.query(nil, :page => 2, :per_page => 25)
# to use a custom query: find customers updated recently and only select a few attributes
query = "Select Id, GivenName From Customer Where Metadata.LastUpdatedTime>'2013-03-13T14:50:22-08:00' Order By Metadata.LastUpdatedTime"
customers.query(query, :page => 2, :per_page => 25)
Often one needs to retrieve multiple pages of records of an Entity type
and loop over them all. Fortunately there is the query_in_batches
collection method:
query = nil
Customer.query_in_batches(query, per_page: 1000) do |batch|
batch.each do |customer|
# ...
end
end
The first argument to query_in_batches
is the query
(which
can be nil
to retrieve the default items in that collection).
If you're are running a custom Query then pass it instead.
The second argument is the options, which are optional.
By default, the options are per_page: 1000
.
You may retrieve an array of objects like so:
customers = service.all
Unlike other query functions which return a Quickbooks::Collection object, the all method returns an array of objects.
You can retrieve a specific Intuit object like so:
customer = service.fetch_by_id("99")
puts customer.company_name
=> "Acme Enterprises"
The find_by(attribute, value)
method allows you to retrieve objects with a simple WHERE query using a single attribute. The attribute may be given as a symbol or a string.
Symbols will be automatically camelcased to match the Quickbooks API field names.
customer = service.find_by(:family_name, "Doe")
or
customer = service.find_by("FamilyName", "Doe")
By default updating an object will un-set any attributes that are NOT specified in the update request. That is, the update is NOT sparse by default. Thus, be careful as you might accidentally unset attributes that you did not specify.
Example:
# fetch a Customer to change their name
customer = service.fetch_by_id("99")
customer.company_name = "Neo Pets"
service.update(customer)
In the above example since we retrieved all fields and then just changed a single attribute, we have given the "complete" entity back to Intuit and effectively only the name is changed.
If you don't have the complete object on hand and only want to change a couple of attributes without un-setting what you are not specifying than you want to use a sparse update:
# update a Customer's name when we only know their ID
customer = Quickbooks::Model::Customer.new
customer.id = 99
customer.company_name = "New Company Name"
service.update(customer, :sparse => true)
Some models require a reference to be set, to a Customer, or an Item, etc. In the Quickbooks API these references
are labeled via a property like CustomerRef
. In quickbooks-ruby
the assignment of these references is done
by using the setter on the _id
property.
For example, to specify a Customer with ID 99 on an Invoice you would do this:
invoice = Quickbooks::Model::Invoice.new
invoice.customer_id = 99
This will automatically set a CustomerRef
XML packet with a value of 99.
The QBO API documentation states that SalesReceipt
has a ShipMethodRef
attribute. Normally, all attributes of a Ref
type
take an pseudo-integer argument, representing the foreign ID, which in turn point to a valid object with that ID.
I say pseudo because they look like Integers but Intuit has made it clear they should be handled as strings.
Anyways, its subtle but the value for a SalesReceipt#ShipMethodRef
while it is a BaseReference
needs to be set manually:
shipping_reference = Quickbooks::Model::BaseReference.new('FedEx', name: 'FedEx')
receipt.ship_method_ref = shipping_reference
A complete example on generating a basic invoice:
# Given a Customer with ID=99 lets invoice them for an Item with ID=500
invoice = Quickbooks::Model::Invoice.new
invoice.customer_id = 99
invoice.txn_date = Date.civil(2013, 11, 20)
invoice.doc_number = "1001" # my custom Invoice # - can leave blank to have Intuit auto-generate it
line_item = Quickbooks::Model::InvoiceLineItem.new
line_item.amount = 50
line_item.description = "Plush Baby Doll"
line_item.sales_item! do |detail|
detail.unit_price = 50
detail.quantity = 1
detail.item_id = 500 # Item ID here
end
invoice.line_items << line_item
service = Quickbooks::Service::Invoice.new
service.company_id = "123"
service.access_token = access_token
created_invoice = service.create(invoice)
puts created_invoice.id
=> 234
Notes: line_item.amount
must equal the unit_price * quantity
in the sales detail packet - otherwise Intuit will raise an exception.
Example (code fragments) of adding a bundle line item, to an invoice:
items = service.find_by(:sku, 'AHH_SWEETS')
bundle = items.entries.first
# be sure to check if you found the bundle you want
# ...
line_item = Quickbooks::Model::InvoiceLineItem.new
line_item.description = bundle.description
line_item.group_line_detail! do |detail|
detail.id = bundle.id
detail.group_item_ref = Quickbooks::Model::BaseReference.new(bundle.name, value: bundle.id)
detail.quantity = 1
bundle.item_group_details.line_items.each do |l|
g_line_item = Quickbooks::Model::InvoiceLineItem.new
g_line_item.amount = 50
g_line_item.sales_item! do |gl|
gl.item_id = l.id
gl.quantity = 1
gl.unit_price = 50
end
detail.line_items << g_line_item
end
end
invoice.line_items << line_item
The Quickbooks API offers a send invoice feature that sends the specified invoice model via email. By default the email is sent to the bill_email
on the invoice. This feature returns an invoice model with updated email_status
and delivery_info
as shown below:
invoice = invoice_service.fetch_by_id("1")
sent_invoice = invoice_service.send(invoice)
puts sent_invoice.email_status
=> EmailSent
puts sent_invoice.delivery_info.delivery_type
=> Email
puts sent_invoice.delivery_info.delivery_time
=> Wed, 25 Feb 2015 18:56:04 UTC +00:00
It is possible to email the invoice to an altermate email address by including the email as a second parameter in the invoice.send
method. When a new email address is provided the invoice model that is returned will have the bill_email
set to the new email address as show below:
invoice = invoice_service.fetch_by_id("1")
sent_invoice = invoice_service.send(invoice, "[email protected]")
puts send_invoice.bill_email.address
=> name@domain.com
Notes: Quickbooks has global company settings to customize the send invoice email message content and format.
#Invoices, SalesReceipts etc can also be defined in a single command
salesreceipt = Quickbooks::Model::SalesReceipt.new({
customer_id: 99,
txn_date: Date.civil(2013, 11, 20),
payment_ref_number: "111", #optional payment reference number/string - e.g. stripe token
deposit_to_account_id: 222, #The ID of the Account entity you want the SalesReceipt to be deposited to
payment_method_id: 333 #The ID of the PaymentMethod entity you want to be used for this transaction
})
salesreceipt.auto_doc_number! #allows Intuit to auto-generate the transaction number
line_item = Quickbooks::Model::Line.new
line_item.amount = 50
line_item.description = "Plush Baby Doll"
line_item.sales_item! do |detail|
detail.unit_price = 50
detail.quantity = 1
detail.item_id = 500 # Item (Product/Service) ID here
end
salesreceipt.line_items << line_item
service = Quickbooks::Service::SalesReceipt.new({access_token: access_token, company_id: "123" })
created_receipt = service.create(salesreceipt)
Notes: In order to auto-generate transaction numbers using salesreceipt.auto_doc_number!
, the 'Custom Transaction Numbers' setting under Company Settings>Sales Form Entry must be unchecked within the Quickbooks account you are posting to.
Use Service#delete
which returns a boolean on whether the delete operation succeeded or not.
service.delete(customer)
=> returns boolean
Email attributes are not just strings, they are top-level objects, e.g. EmailAddress
on a Customer
for instance.
A Customer
has a setter method to make assigning an email address easier.
customer = Quickbooks::Model::Customer.new
customer.email_address = "[email protected]"
Like Email Addresses, telephone numbers are not just basic strings but are top-level objects.
phone1 = Quickbooks::Model::TelephoneNumber.new
phone1.free_form_number = "97335530394"
customer.mobile_phone = phone1
Addresses are also top-level objects, so they must be instantiated and set.
address = Quickbooks::Model::PhysicalAddress.new
address.line1 = "2200 Mission St."
address.line2 = "Suite 201"
address.city = "Santa Cruz"
address.country_sub_division_code = "CA" # State, in United States
address.postal_code = "95060"
customer.billing_address = address
You can batch operations such creating an Invoice, updating a Customer, etc. The maximum batch size is 25 objects.
How to use:
batch_req = Quickbooks::Model::BatchRequest.new
customer = Quickbooks::Model::Customer.new
# build the customer as needed
...
item = Quickbooks::Model::Item.new
# build the item as needed
...
batch_req.add("bId1", customer, "create")
batch_req.add("bId2", item, "create")
# Add more items to create/update as needed, up to 25
batch_service = Quickbooks::Service::Batch.new
batch_response = batch_service.make_request(batch_req)
batch_response.response_items.each do |res|
puts res.bId
puts res.fault? ? "error" : "success"
end
For complete details on Batch Operations see: https://developer.intuit.com/docs/api/accounting/batch
Intuit requires that complex queries be escaped in a certain way. To make it easier to build queries that will be accepted I have provided a basic Query builder.
util = Quickbooks::Util::QueryBuilder.new
# the method signature is: clause(field, operator, value)
clause1 = util.clause("DisplayName", "LIKE", "%O'Halloran")
clause2 = util.clause("CompanyName", "=", "Smith")
service.query("SELECT * FROM Customer WHERE #{clause1} AND #{clause2}")
The Quickbooks API supports two different types of attachments, depending on whether you have an actual file to upload or just want to upload "meta-data" about an operation.
meta = Quickbooks::Model::Attachable.new
meta.file_name = "monkey.jpg"
meta.note = "A note"
meta.content_type = "image/jpeg"
entity = Quickbooks::Model::BaseReference.new(3, type: 'Customer')
meta.attachable_ref = Quickbooks::Model::AttachableRef.new(entity)
Note: No actual file is being attached, we are just describing a file.
upload_service = Quickbooks::Service::Upload.new
# args:
# local-path to file
# file mime-type
# (optional) instance of Quickbooks::Model::Attachable - metadata
result = upload_service.upload("tmp/monkey.jpg", "image/jpeg", attachable_metadata)
If successful result
will be an instance of the Attachable
model:
puts attach.temp_download_uri
=> "https://intuit-qbo-prod-29.s3.amazonaws.com/12345%2Fattachments%2Fmonkey-1423760870606.jpg?Expires=1423761772&AWSAcc ... snip ..."
To download a PDF of an Invoice:
service = Quickbooks::Service::Invoice.new # or use the SalesReceipt service
# +invoice+ is an instance of Quickbooks::Model::Invoice
raw_pdf_data = service.pdf(invoice)
# write it to disk
File.open("invoice.pdf", "wb") do |file|
file.write(raw_pdf_data)
end
Quickbooks has an api called Change Data Capture that provides a way of finding out which Entities have recently changed, as deleted entities will not be returned by a standard query. It is possible to request changes up to 30 days ago.
The primary method for querying to ChangeDataCapture is through Quickbooks::Service::ChangeDataCapture.
Quickbooks::Model::ChangeDataCapture also supports parsing the XML response into a hash of entity types through the all_types method.
service = Quickbooks::Service::ChangeDataCapture.new
...
# define the list of entities to query
entities = ["Invoice", "Bill", "Payment"] #etc
changed = service.since(entities, Time.now.utc - 5.days)
...
# parse the XML to a list of Quickbooks::Models
changed_as_hash = changed.all_types
Deleted entities can be found in the XML by checking their @status is "Deleted". In the return from the all_types method, deleted items will be of type Quickbooks::Model::ChangeModel.
see: https://developer.intuit.com/docs/0100_quickbooks_online/0200_dev_guides/accounting/change_data_capture for more information.
ChangeModel alternative Change Data Capture For Invoices, Customers, Vendors, Items, Payments, Purchases and Credit Memos
It is possible to get a sparse summary of which Invoice, Customer, Vendor, Item, Payment, Purchase or Credit Memo Entries have recently changed. It is possible to request changes up to 30 days ago.
service = Quickbooks::Service::InvoiceChange.new
...
changed = service.since(Time.now.utc - 5.days)
customer_service = Quickbooks::Service::CustomerChange.new
...
customer_changed = customer_service.since(Time.now.utc - 5.days)
vendor_service = Quickbooks::Service::VendorChange.new
...
vendor_changed = vendor_service.since(Time.now.utc - 5.days)
item_service = Quickbooks::Service::ItemChange.new
...
item_changed = item_service.since(Time.now.utc - 5.days)
see: https://developer.intuit.com/docs/0100_quickbooks_online/0200_dev_guides/accounting/change_data_capture for more information.
Quickbooks has an API called the Reports API that provides abilities such as: business and sales overview; vendor and customer balances; review expenses and purchases and more. See the specs for examples of how to leverage.
Intuit started the v3 API supporting both XML and JSON. However, new
v3 API services such as Tax Service
will only support
JSON. This gem has
roots in the v2 API, which was XML only, and hence was constructed supporting XML only.
Set the default log enablement:
Quickbooks.log = true
Configure a service instance to log (or not) independently:
customer_service = Quickbooks::Service::Customer.new
customer_service.log = true
By default, logging is directed at STDOUT, but another target may be defined, e.g. in Rails
Quickbooks.logger = Rails.logger
Quickbooks.log = true
# Pretty-printing logged xml is true by default
Quickbooks.log_xml_pretty_print = false
While logging is helpful the best debugging (in my opinion) is available by using a HTTP proxy such as Charles Proxy.
To enable HTTP proxying, add something like the following connection_opts
when you generate your OAuth Client:
oauth_params = {
site: "https://appcenter.intuit.com/connect/oauth2",
authorize_url: "https://appcenter.intuit.com/connect/oauth2",
token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer",
connection_opts: {
proxy: {uri: "http://127.0.0.1:8888"},
ssl: {verify: false} # assuming a self-signed cert is used by your proxy
}
}
oauth2_client = OAuth2::Client.new(ENV['OAUTH_CLIENT_ID'], ENV['OAUTH_CLIENT_SECRET'], oauth_params)
Entity | Create | Update | Query | Delete | Fetch by ID | Other |
---|---|---|---|---|---|---|
Account | yes | yes | yes | yes | yes | |
Attachable | no | no | no | no | no | |
Bill | yes | yes | yes | yes | yes | |
Bill Payment | yes | yes | yes | yes | yes | |
Class | yes | yes | yes | yes | yes | |
Company Info | n/a | n/a | yes | n/a | yes | |
Credit Memo | yes | yes | yes | yes | no | |
Customer | yes | yes | yes | yes | yes | |
Department | yes | yes | yes | yes | yes | |
Deposit | yes | yes | yes | yes | yes | |
Employee | yes | yes | yes | yes | yes | |
Entitlements | no | no | no | no | no | |
Estimate | yes | yes | yes | yes | yes | |
Invoice | yes | yes | yes | yes | yes | |
Item | yes | yes | yes | yes | yes | |
Journal Entry | yes | yes | yes | yes | yes | |
Payment | yes | yes | yes | yes | yes | |
PaymentMethod | yes | yes | yes | yes | yes | |
Preferences | n/a | no | yes | n/a | yes | |
Purchase | yes | yes | yes | yes | yes | |
Purchase Order | yes | yes | yes | yes | yes | |
Refund Receipt | yes | yes | yes | yes | yes | |
Sales Receipt | yes | yes | yes | yes | yes | |
Sales Rep | no | no | no | no | no | |
Sales Tax | no | no | no | no | no | |
Sales Term | no | no | no | no | no | |
Tax Agency | yes | yes | yes | yes | yes | |
Tax Code | no | no | yes | no | no | |
Tax Rate | yes | yes | yes | no | no | |
*Tax Service | yes | yes | no | no | no | |
Term | yes | yes | yes | yes | yes | |
Time Activity | yes | yes | yes | yes | yes | |
Tracking Class | no | no | no | no | no | |
Vendor | yes | yes | yes | yes | yes | |
Vendor Credit | yes | yes | yes | yes | yes |
*JSON only
quickbooks-ruby-base
: Complements quickbooks-ruby by providing a base class to handle routine tasks like creating a model, service, and displaying information.
qbo_rails
: Simple Rails error handling and QuickBooks Online "Id" persistence. Uses quickbooks-ruby
.
- Implement other Line Item types, e.g.
DescriptionLineDetail
for Invoices - Full JSON support
Cody Caughlan
quickbooks-ruby
has been a community effort and I am extremely thankful for all the amazing contributors.
The MIT License
Copyright (c) 2013
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.