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# See blog post at http://vitobotta.com/sinatra-contact-form-jekyll/
%w(rubygems sinatra liquid active_support/secure_random resolv open-uri pony haml).each{ |g| require g }
APP_ROOT = File.join(File.dirname(__FILE__), '..')
set :root, APP_ROOT
set :views, File.join(APP_ROOT, "_layouts")
not_found do
status 404
not_found_template = File.join(APP_ROOT, "public", "404.html")
File.exists?(not_found_template) ? File.read(not_found_template) : "Oops, the page you are looking for does not exist :("
end
def valid_email?(email)
if email =~ /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/
domain = email.match(/\@(.+)/)[1]
Resolv::DNS.open do |dns|
@mx = dns.getresources(domain, Resolv::DNS::Resource::IN::MX)
end
@mx.size > 0 ? true : false
else
false
end
end
def valid_captcha? answer
open("http://captchator.com/captcha/check_answer/#{@captcha_id}/#{answer}").read.to_i.nonzero? rescue false
end
def valid_url? url
return true if url == "http://"
!(url =~ /^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/ix).nil?
end
def given? field
!field.empty?
end
def validate params
errors = {}
[:name, :email, :website, :message, :captcha].each{|key| params[key] = (params[key] || "").strip }
errors[:name] = "This field is required" unless given? params[:name]
if given? params[:email]
errors[:email] = "Please enter a valid email address" unless valid_email? params[:email]
else
errors[:email] = "This field is required"
end
errors[:website] = "Please enter a valid web address" unless valid_url? params[:website]
errors[:message] = "This field is required" unless given? params[:message]
if given? params[:captcha]
errors[:captcha] = "The code you've entered is not valid" unless valid_captcha? params[:captcha]
else
errors[:captcha] = "Please enter the code as shown in the picture"
end
errors
end
def send_email params, ip_address
email_template = <<-EOS
Sent via http://vitobotta.com/contact/
When: {{ when }}
IP address: {{ ip_address }}
Your name: {{ name }}
Email: {{ email }}
Website: {{ website }}
Message:
{{ message }}
EOS
body = Liquid::Template.parse(email_template).render "name" => params[:name],
"email" => params[:email],
"website" => params[:website],
"message" => params[:message],
"when" => Time.now.strftime("%b %e, %Y %H:%M:%S %Z"),
"ip_address" => ip_address
Pony.mail(:to => "destination email address", :from => params[:email], :subject => "A comment from #{params[:name]}", :body => body)
end
get '/contact-form/?' do
@captcha_id, @errors, @values, @sent = ActiveSupport::SecureRandom.hex(16), {}, {}, false
haml :contact_form
end
post '/contact-form/?' do
@captcha_id = (params[:captcha_id] || ActiveSupport::SecureRandom.hex(16))
@errors = validate(params)
@values = params
if @errors.empty?
begin
send_email(params, @env['REMOTE_ADDR'])
@sent = true
rescue Exception => e
puts e
@failure = "Ooops, it looks like something went wrong while attempting to send your email. Mind trying again now or later? :)"
end
end
haml :contact_form
end
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