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
19
 
# 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
  add_xsmtpapi_to_address_types if replaced_addresses[:X_SMTPAPI]
  if call_super or replaced_addresses[:X_SMTPAPI]
    add_body_postscript_without_mail_header(part, @@replaced_addresses)
  end
  remove_xsmtpapi_from_address_types if replaced_addresses[:X_SMTPAPI]

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.



64
65
66
67
68
69
70
71
 
# File 'lib/mail_safe-sendgrid.rb', line 64

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



75
76
77
78
79
80
81
 
# File 'lib/mail_safe-sendgrid.rb', line 75

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 



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
52
53
54
55
56
 
# File 'lib/mail_safe-sendgrid.rb', line 23

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
  if x_smtpapi['to']
    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)
  else
    add_body_postscript(mail,{}, true)
  end

  # we need to override add_text_postscript to include sendgrid x-smtpapi and not ADDRESS_TYPES only

end