Class: MailSafe::AddressReplacer

Inherits:
Object
  • Object
show all
Defined in:
lib/mail_safe-sendgrid.rb

Constant Summary collapse

@@replaced_addresses = 
{}
@@address_types = 
ADDRESS_TYPES.dup

Class Method Summary collapse

Class Method Details

.add_body_postscript_with_mail_header(part, replaced_addresses, call_super = false) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
 
# File 'lib/mail_safe-sendgrid.rb', line 9

def add_body_postscript_with_mail_header(part, replaced_addresses, call_super = false)
  # we don't want to call add_body_postscript until after we've added the SendGrid SMTPAPI
  # replaced addresses to the list of all addresses replaced by Mail Safe
  @@replaced_addresses.reverse_merge! replaced_addresses
  if call_super or replaced_addresses[:X_SMTPAPI]
    add_xsmtpapi_to_address_types
    add_body_postscript_without_mail_header(part, @@replaced_addresses)
    remove_xsmtpapi_from_address_types
  end
end

.add_xsmtpapi_to_address_types ⇒ Object

ADDRESS_TYPES is frozen but we want to add :X_SMTPAPI to it so the original add__postscript functions have the SendGrid specific addresses that MailSafe removed as well when generating their message. Otherwise we would have to override these functions entirely.



59
60
61
62
63
64
65
66
 
# File 'lib/mail_safe-sendgrid.rb', line 59

def add_xsmtpapi_to_address_types
  modified_address_types = @@address_types.dup
  modified_address_types << :X_SMTPAPI
  # silence already initialized constant ADDRESS_TYPES
  silence_warnings do
    MailSafe::AddressReplacer.singleton_class.const_set(:ADDRESS_TYPES,modified_address_types.uniq)
  end
end

.remove_xsmtpapi_from_address_types ⇒ Object

We then need to reset ADDRESS_TYPES back to the frozen value for MailSafe to be able to process the next message properly



70
71
72
73
74
75
76
 
# File 'lib/mail_safe-sendgrid.rb', line 70

def remove_xsmtpapi_from_address_types

  # silence already initialized constant ADDRESS_TYPES
  silence_warnings do
    MailSafe::AddressReplacer.singleton_class.const_set(:ADDRESS_TYPES,@@address_types)
    end
end

.replace_external_addresses_with_mail_header(mail) ⇒ Object 



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
 
# File 'lib/mail_safe-sendgrid.rb', line 22

def replace_external_addresses_with_mail_header(mail)
  replace_external_addresses_without_mail_header(mail)
  # load X-SMTPAPI headers (json)
  x_smtpapi = JSON.parse mail.header['X-SMTPAPI'].to_s

  external_indices = []
  # get a list of indices for external addresses
  x_smtpapi['to'].each_with_index do |address, index|
    external_indices << index if !MailSafe::Config.is_internal_address?(address)
  end
  deleted_cnt = 0
  deleted_addresses = []
  external_indices.each do |i|
    # remove any external address from :to
    deleted_addresses << x_smtpapi['to'].delete_at(i - deleted_cnt)
    # remove the related tokens for every array in :sub
    x_smtpapi['sub'].each do |k, v|
      v.delete_at(i-deleted_cnt)
      x_smtpapi['sub'][k] = v
    end
    # the indices decrement as we remove elements, deleted_cnt accounts for this
    deleted_cnt += 1
  end
  # save the headers back to X-SMTPAPI
  mail.header['X-SMTPAPI'].value = x_smtpapi.to_json.gsub(/(["\]}])([,:])(["\[{])/, '\\1\\2 \\3')

  add_body_postscript(mail,{:X_SMTPAPI=>deleted_addresses}, true)
  # we need to override add_text_postscript to include sendgrid x-smtpapi and not ADDRESS_TYPES only

end