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annotate mod_firewall/scripts/spam-blocking.pfw @ 5237:3354f943c1fa

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mod_http_oauth2: Require URL to client informational page in registration Since it's used without fallback in the template, seems someone expected this to always be there, and we might as well.
author Kim Alvefur <zash@zash.se>
date Sat, 11 Mar 2023 21:13:00 +0100
parents bb60db2b2cd1
children af2778f4ee29
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #### Anti-spam ruleset ###########################################
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2 #
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3 # This script provides some foundational anti-spam rules. It aims
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4 # to PASS stanzas that are definitely not spam, and DROP stanzas
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5 # that are very likely spam.
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6 #
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7 # It does not do any form of content filtering,
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8 # but this can be implemented by other scripts and
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9 # modules as desired using the chains documented below.
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10 #
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11 #
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12 # The following chains are available as extension
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13 # points:
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14 #
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15 # ::user/spam_check_custom
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16 # Apply additional rules to all stanzas before they are checked.
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17 # Mainly useful to PASS stanzas that you do not want to be
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18 # filtered.
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19 #
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20 # ::user/spam_check_message_custom
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21 # Apply additional rules to messages from strangers, aiming to
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22 # PASS stanzas that are not spam and jump to ::user/spam_reject
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23 # for stanzas that are considered spam.
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24 #
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25 # ::user/spam_check_message_content_custom
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26 # Apply additional rules to messages that may be spam, based on
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27 # message content rules. These may contain more intensive rules,
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28 # so are executed after all other checks. Rules should jump to
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29 # ::user/spam_reject if a message is considered spam.
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30 #
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31 # ::user/spam_check_presence_custom
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32 # Apply additional rules to presence that may be spam.
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33 #
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34 # ::user/spam_check_subscription_request_custom
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35 # Apply additional rules to subscription requests.
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36 #
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37 # ::user/spam_handle_unknown_custom
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38 # Override default handling of stanzas that weren't explicitly
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39 # passed or rejected by the anti-spam checks.
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40 #
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41 # ::user/spam_reject_custom
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42 # Override default handling of stanzas that have
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43 # been recognised as spam (default is to bounce
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44 # a policy-violation error).
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45 #
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46 ##################################################################
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47
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48 #### Entry point for all incoming stanzas ########################
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49 ::deliver
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50
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51 # Override this if you want to prevent certain stanzas going through
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52 # the normal spam_check chain
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53 JUMP_CHAIN=user/spam_check_custom
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54
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55 # Run the default spam_check chain
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56 JUMP_CHAIN=user/spam_check
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57
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58 ##################################################################
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59
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60 #### General spam-checking rules (all stanzas) ###################
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61 ::user/spam_check
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62
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63 # Pass stanzas that a user sends to their own account
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64 TO SELF?
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65 PASS.
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66
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67 # Pass stanzas that are addressed to a valid full JID
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68 TO FULL JID?
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69 PASS.
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70
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71 # Pass stanzas from contacts
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72 SUBSCRIBED?
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73 PASS.
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74
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75 # Run extra rules that apply to messages only
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76 KIND: message
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77 JUMP CHAIN=user/spam_check_message
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78
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79 # Run extra rules that apply to presence stanzas only
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80 KIND: presence
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81 JUMP CHAIN=user/spam_check_presence
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82
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83 JUMP CHAIN=user/spam_handle_unknown
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84
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85 # Default is to allow, override this with
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86 # the 'user/spam_handle_unknown' chain
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87 PASS.
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88
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89 #### Rules for messages ##########################################
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90 ::user/spam_check_message
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92 JUMP CHAIN=user/spam_check_message_custom
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93
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94 # Type 'groupchat' messages addressed to an offline full JID are harmless,
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95 # and should be routed normally to handle MUC 'ghosts' correctly
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96 TO: <*>@<*>/<*>
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97 TYPE: groupchat
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98 PASS.
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99
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100 # Non-chat message types often generate pop-ups in clients,
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101 # so we won't accept them from strangers
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102 NOT TYPE: chat
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103 JUMP CHAIN=user/spam_reject
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104
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105 JUMP CHAIN=user/spam_check_message_content
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106
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107 # This chain can be used by other scripts
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108 # and modules that analyze message content
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109 JUMP CHAIN=user/spam_check_message_content_custom
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110
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111 ##################################################################
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112
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113 #### Rules for presence stanzas ##################################
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114 ::user/spam_check_presence
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115
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116 JUMP CHAIN=user/spam_check_presence_custom
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117
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118 # Presence to offline full JIDs is harmless, and should be routed
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119 # normally to handle MUC 'ghosts' correctly
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120 TO: <*>@<*>/<*>
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121 PASS.
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122
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123 # These may be received if rosters get out of sync and are harmless
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124 # because they will not be routed to the client unless necessary
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125 TYPE: unsubscribe|unsubscribed
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126 PASS.
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127
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128 # We don't want to receive presence from random strangers,
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129 # but still allow subscription requests
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130 NOT TYPE: subscribe|subscribed
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131 DROP.
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132
cc01a5bfcf3b mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
Matthew Wild <mwild1@gmail.com>
parents:
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133 # This chain can be used by other scripts
cc01a5bfcf3b mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
Matthew Wild <mwild1@gmail.com>
parents:
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134 # and modules to filter subscription requests
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135 JUMP CHAIN=user/spam_check_subscription_request
fc53165d8afe spam-blocking.pfw: Much improvement
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136
4149
bb60db2b2cd1 mod_firewall: Update another chain name for consistency
Matthew Wild <mwild1@gmail.com>
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137 JUMP CHAIN=user/spam_check_subscription_request_custom
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138
2565
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139 ##################################################################
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140
2565
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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141 #### Stanzas reaching this chain will be rejected ################
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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142 ::user/spam_reject
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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143
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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144 # This chain can be used by other scripts
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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145 # and modules to override the default behaviour
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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146 # when rejecting spam stanzas
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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147 JUMP CHAIN=user/spam_reject_custom
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148
cc01a5bfcf3b mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
Matthew Wild <mwild1@gmail.com>
parents:
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149 LOG=Rejecting suspected spam: $(stanza:top_tag())
cc01a5bfcf3b mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
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150 BOUNCE=policy-violation
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151
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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152 ##################################################################
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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153
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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154 #### Stanzas that may be spam, but we're not sure either way######
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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155 ::user/spam_handle_unknown
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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156
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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157 # This chain can be used by other scripts
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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158 # and modules to apply additional checks, or to
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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159 # override the default behaviour
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
parents: 2557
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160 JUMP CHAIN=user/spam_handle_unknown_custom
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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161
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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162 #LOG=[debug] Spam check allowing: $(stanza:top_tag())
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Matthew Wild <mwild1@gmail.com>
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163
fc53165d8afe spam-blocking.pfw: Much improvement
Matthew Wild <mwild1@gmail.com>
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164 ##################################################################