[eea7bed4] | 1 | use strict; |
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| 2 | use warnings; |
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| 3 | |
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| 4 | package BarnOwl::Logging; |
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| 5 | |
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| 6 | =head1 BarnOwl::Logging |
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| 7 | |
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| 8 | =head1 DESCRIPTION |
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| 9 | |
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| 10 | C<BarnOwl::Logging> implements the internals of logging. All customizations |
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| 11 | to logging should be done in the appropriate subclass of L<BarnOwl::Message>. |
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| 12 | |
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| 13 | =head2 USAGE |
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| 14 | |
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| 15 | Modules wishing to customize how messages are logged should override the |
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| 16 | relevant subroutines in the appropriate subclass of L<BarnOwl::Message>. |
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| 17 | |
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[5093c6f] | 18 | Modules wishing to log errors sending outgoing messages should call |
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| 19 | L<BarnOwl::Logging::log_outgoing_error> with the message that failed |
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| 20 | to be sent. |
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| 21 | |
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[eea7bed4] | 22 | =head2 EXPORTS |
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| 23 | |
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| 24 | None by default. |
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| 25 | |
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| 26 | =cut |
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| 27 | |
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| 28 | use Exporter; |
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| 29 | |
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| 30 | our @EXPORT_OK = qw(); |
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| 31 | |
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| 32 | our %EXPORT_TAGS = (all => [@EXPORT_OK]); |
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| 33 | |
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| 34 | use File::Spec; |
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| 35 | |
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[4ead7b3] | 36 | $BarnOwl::Hooks::newMessage->add("BarnOwl::Logging::log"); |
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[42779f8] | 37 | $BarnOwl::Hooks::startup->add("BarnOwl::Logging::_register_variables"); |
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| 38 | |
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| 39 | sub _register_variables { |
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| 40 | BarnOwl::new_variable_bool('logging', |
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| 41 | { |
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| 42 | default => 0, |
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| 43 | summary => 'turn personal logging on or off', |
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| 44 | description => "If this is set to on, personal messages are\n" |
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| 45 | . "logged in the directory specified\n" |
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| 46 | . "by the 'logpath' variable. The filename in that\n" |
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| 47 | . "directory is derived from the sender of the message." |
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| 48 | }); |
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| 49 | |
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| 50 | BarnOwl::new_variable_bool('classlogging', |
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| 51 | { |
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| 52 | default => 0, |
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| 53 | summary => 'turn class logging on or off', |
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| 54 | description => "If this is set to on, class messages are\n" |
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| 55 | . "logged in the directory specified by the\n" |
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| 56 | . "'classpath' variable. The filename in that\n" |
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| 57 | . "directory is derived from the class to which\n" |
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| 58 | . "the message was sent." |
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| 59 | }); |
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| 60 | |
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| 61 | BarnOwl::new_variable_string('logfilter', |
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| 62 | { |
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| 63 | default => '', |
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| 64 | summary => 'name of a filter controlling which messages to log', |
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| 65 | description => "If non empty, any messages matching the given filter will be logged.\n" |
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| 66 | . "This is a completely separate mechanism from the other logging\n" |
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| 67 | . "variables like logging, classlogging, loglogins, loggingdirection,\n" |
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| 68 | . "etc. If you want this variable to control all logging, make sure\n" |
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| 69 | . "all other logging variables are in their default state." |
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| 70 | }); |
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| 71 | |
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| 72 | BarnOwl::new_variable_bool('loglogins', |
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| 73 | { |
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| 74 | default => 0, |
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| 75 | summary => 'enable logging of login notifications', |
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| 76 | description => "When this is enabled, BarnOwl will log login and logout notifications\n" |
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| 77 | . "for AIM, zephyr, or other protocols. If disabled BarnOwl will not print\n" |
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| 78 | . "login or logout notifications." |
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| 79 | }); |
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[03fbf66] | 80 | |
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| 81 | BarnOwl::new_variable_enum('loggingdirection', |
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| 82 | { |
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| 83 | default => 'both', |
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| 84 | validsettings => [qw(in out both)], |
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| 85 | summary => "specifies which kind of messages should be logged", |
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| 86 | description => "Can be one of 'both', 'in', or 'out'. If 'in' is\n" |
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| 87 | . "selected, only incoming messages are logged, if 'out'\n" |
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| 88 | . "is selected only outgoing messages are logged. If 'both'\n" |
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| 89 | . "is selected both incoming and outgoing messages are\n" |
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| 90 | . "logged." |
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| 91 | }); |
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| 92 | |
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| 93 | BarnOwl::new_variable_string('logpath', |
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| 94 | { |
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| 95 | default => '~/zlog/people', |
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| 96 | validsettings => '<path>', |
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| 97 | summary => 'path for logging personal messages', |
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| 98 | description => "Specifies a directory which must exist.\n" |
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| 99 | . "Files will be created in the directory for each sender." |
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| 100 | }); |
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| 101 | |
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| 102 | BarnOwl::new_variable_string('classlogpath', |
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| 103 | { |
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| 104 | default => '~/zlog/class', |
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| 105 | validsettings => '<path>', |
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| 106 | summary => 'path for logging class zephyrs', |
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| 107 | description => "Specifies a directory which must exist.\n" |
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| 108 | . "Files will be created in the directory for each class." |
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| 109 | }); |
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[42779f8] | 110 | } |
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[4ead7b3] | 111 | |
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[eea7bed4] | 112 | =head2 sanitize_filename BASE_PATH FILENAME |
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| 113 | |
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| 114 | Sanitizes C<FILENAME> and concatenates it with C<BASE_PATH>. |
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| 115 | |
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| 116 | In any filename, C<"/"> and any control characters (characters which |
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| 117 | match C<[:cntrl:]> get replaced by underscores. If the resulting |
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| 118 | filename is empty or equal to C<"."> or C<"..">, it is replaced with |
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| 119 | C<"weird">. |
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| 120 | |
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| 121 | =cut |
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| 122 | |
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| 123 | sub sanitize_filename { |
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| 124 | my $base_path = BarnOwl::Internal::makepath(shift); |
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| 125 | my $filename = shift; |
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| 126 | $filename =~ s/[[:cntrl:]\/]/_/g; |
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| 127 | if ($filename eq '' || $filename eq '.' || $filename eq '..') { |
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| 128 | $filename = 'weird'; |
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| 129 | } |
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| 130 | # The original C code also removed characters less than '!' and |
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| 131 | # greater than or equal to '~', marked file names beginning with a |
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| 132 | # non-alphanumeric or non-ASCII character as 'weird', and rejected |
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| 133 | # filenames longer than 35 characters. |
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| 134 | return File::Spec->catfile($base_path, $filename); |
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| 135 | } |
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| 136 | |
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| 137 | =head2 get_filenames MESSAGE |
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| 138 | |
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| 139 | Returns a list of filenames in which to log the passed message. |
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| 140 | |
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| 141 | This method calls C<log_filenames> on C<MESSAGE> to determine the list |
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| 142 | of filenames to which C<MESSAGE> gets logged. All filenames are |
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| 143 | relative to C<MESSAGE->log_base_path>. If C<MESSAGE->log_to_all_file> |
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| 144 | returns true, then the filename C<"all"> is appended to the list of |
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| 145 | filenames. |
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| 146 | |
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| 147 | Filenames are sanitized by C<sanitize_filename>. |
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| 148 | |
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| 149 | =cut |
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| 150 | |
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| 151 | sub get_filenames { |
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| 152 | my ($m) = @_; |
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| 153 | my @filenames = $m->log_filenames; |
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| 154 | push @filenames, 'all' if $m->log_to_all_file; |
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| 155 | return map { sanitize_filename($m->log_base_path, $_) } @filenames; |
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| 156 | } |
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| 157 | |
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[5093c6f] | 158 | =head2 should_log_message MESSAGE |
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| 159 | |
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| 160 | Determines whether or not the passed message should be logged. |
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| 161 | |
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| 162 | To customize the behavior of this method, override |
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| 163 | L<BarnOwl::Message::should_log>. |
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| 164 | |
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| 165 | =cut |
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| 166 | |
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| 167 | sub should_log_message { |
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| 168 | my ($m) = @_; |
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| 169 | # If there's a logfilter and this message matches it, log. |
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| 170 | # pass quiet=1, because we don't care if the filter doesn't exist |
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| 171 | return 1 if BarnOwl::message_matches_filter($m, BarnOwl::getvar('logfilter'), 1); |
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| 172 | # otherwise we do things based on the logging variables |
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| 173 | # skip login/logout messages if appropriate |
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| 174 | return 0 if $m->is_loginout && BarnOwl::getvar('loglogins') eq 'off'; |
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| 175 | # check direction |
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| 176 | return 0 if $m->is_outgoing && BarnOwl::getvar('loggingdirection') eq 'in'; |
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| 177 | return 0 if $m->is_incoming && BarnOwl::getvar('loggingdirection') eq 'out'; |
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| 178 | return $m->should_log; |
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| 179 | } |
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| 180 | |
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| 181 | =head2 log MESSAGE |
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| 182 | |
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| 183 | Call this method to (potentially) log a message. |
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| 184 | |
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| 185 | To customize the behavior of this method for your messages, override |
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| 186 | L<BarnOwl::Message::log>, L<BarnOwl::Message::should_log>, |
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| 187 | L<BarnOwl::Message::log_base_path>, and/or |
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| 188 | L<BarnOwl::Message::log_filenames>. |
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| 189 | |
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| 190 | =cut |
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| 191 | |
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| 192 | sub log { |
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| 193 | my ($m) = @_; |
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[4ead7b3] | 194 | return unless defined $m; |
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[5093c6f] | 195 | return unless BarnOwl::Logging::should_log_message($m); |
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| 196 | my $log_text = $m->log; |
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| 197 | foreach my $filename (BarnOwl::Logging::get_filenames($m)) { |
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| 198 | BarnOwl::Logging::enqueue_text($log_text, $filename); |
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| 199 | } |
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| 200 | } |
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| 201 | |
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| 202 | =head2 log_outgoing_error MESSAGE |
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| 203 | |
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| 204 | Call this method to (potentially) log an error in sending an |
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| 205 | outgoing message. Errors get logged to the same file(s) as |
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| 206 | successful messages. |
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| 207 | |
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| 208 | To customize the behavior of this method for your messages, override |
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| 209 | L<BarnOwl::Message::log_outgoing_error>, |
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| 210 | L<BarnOwl::Message::should_log>, |
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| 211 | L<BarnOwl::Message::log_base_path>, and/or |
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| 212 | L<BarnOwl::Message::log_filenames>. |
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| 213 | |
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| 214 | =cut |
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| 215 | |
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| 216 | sub log_outgoing_error { |
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| 217 | my ($m) = @_; |
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| 218 | return unless BarnOwl::Logging::should_log_message($m); |
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| 219 | my $log_text = $m->log_outgoing_error; |
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| 220 | foreach my $filename (BarnOwl::Logging::get_filenames($m)) { |
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| 221 | BarnOwl::Logging::enqueue_text($log_text, $filename); |
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[eea7bed4] | 222 | } |
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| 223 | } |
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| 224 | |
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| 225 | 1; |
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