Email and local delivery support added.

This commit is contained in:
Chris 2012-08-16 13:41:01 +01:00
parent d84c784ab9
commit 0aa8cda126
5 changed files with 307 additions and 0 deletions

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@ -126,4 +126,5 @@ sub load_transport_module {
return $self -> {"module"} -> load_module($modname -> [0]);
}
1;

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@ -337,6 +337,47 @@ sub get_sendable_messages {
}
# ============================================================================
# Delivery
## @method $ deliver_queue($try_failed)
# Attempt to deliver queued messages that have not yet been sent. This will invoke
# the transport modules in turn, fetching sendable messages and trying to send them
#
# @param try_failed If this is set to true, transport modules will try to resend
# messages that previously failed to send.
sub deliver_queue {
my $self = shift;
my $try_failed = shift;
# Go through the list of transports, fetching the messages that can be sent by
# that transport and try to send them.
my $transports = $self -> get_transports();
foreach my $transport (@{$transports}) {
my $messages = $self -> get_sendable_messages($transport -> {"id"}, $try_failed)
or return undef;
if(scalar(@{$messages})) {
# Load the transport...
$transport -> {"module"} = $self -> load_transport_module($transport -> {"id"})
or return $self -> self_error("Transport loading failed: ".$transport -> {"module"} -> {"errstr"});
# Try to deliver each sendable message
foreach my $message (@{$messages}) {
my $sent = $transport -> {"module"} -> deliver($message);
# Store the send status for this transport
$self -> update_status($message -> {"id"},
$transport -> {"id"},
$sent ? "sent" : "failed",
$sent ? undef : $transport -> {"errstr"})
or return undef;
}
}
}
}
# ============================================================================
# Marking of various sorts

44
Message/Transport.pm Normal file
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@ -0,0 +1,44 @@
## @file
# This file contains the implementation of the base Message Transport class.
#
# @author Chris Page <chris@starforge.co.uk>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
## @class Message::Transport
# This is the 'base' class for the Message::Transport modules. It provides
# any functionality that needs to be shared between the Message::Transport::*
# modules.
package Message::Transport;
use strict;
use base qw(Message);
# ============================================================================
# Delivery
## @method $ deliver($message)
# Attempt to deliver the specified message to its recipients. This function
# does not actually do anything in the Message::Transport class - it must
# be overridden in subclasses to actually perform message delivery.
#
# @param message A reference to hash containing the message data.
# @return true if the message is sent successfully, undef if not.
sub deliver {
my $self = shift;
my $message = shift;
return $self -> self_error("Attempt to send message '".$message -> {"id"}."' through transport ".ref($self)." with no deliver() mechanism.");
}
1;

177
Message/Transport/Email.pm Normal file
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@ -0,0 +1,177 @@
## @file
# This file contains the implementation of the EMail Message Transport class.
#
# @author Chris Page &lt;chris@starforge.co.uk&gt;
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
## @class Message::Transport::Email
# This class implements the email transport system; lasciate ogne speranza, voi ch'intrate.
#
package Message::Transport::Email;
use strict;
use base qw(Message);
use Encode;
use Email::MIME;
use Email::Sender::Simple qw(sendmail);
use Email::Sender::Transport::SMTP;
use Email::Sender::Transport::SMTP::Persistent;
use Try::Tiny;
# ============================================================================
# Constructor
## @cmethod Message::Transport::Email new(%args)
# Create a new Message::Transport::Email object. This will create an object
# that may be used to send messages to recipients over SMTP.
#
# @param args A hash of arguments to initialise the Message::Transport::Email
# object with.
# @return A new Message::Transport::Email object.
sub new {
my $invocant = shift;
my $class = ref($invocant) || $invocant;
my $self = $class -> SUPER::new(@_)
or return undef;
# Make local copies of the config for readability
# Arguments for Email::Sender::Transport::SMTP(::Persistent)
$self -> {"host"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::smtp_host"};
$self -> {"port"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::smtp_port"};
$self -> {"ssl"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::smtp_secure"};
$self -> {"username"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::username"};
$self -> {"password"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::password"};
# Should persistent SMTP be used?
$self -> {"persist"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::persist"};
# Should the sender be forced (ie: always use the system-specified sender, even if the message has
# an explicit sender. This should be the address to set as the sender.
$self -> {"force_sender"} = $self -> {"settings"} -> {"config"} -> {"Message::Transport::Email::force_sender"};
# The address to use as the envelope sender.
$self -> {"env_sender"} = $self -> {"settings"} -> {"config"} -> {"Core:envelope_address"};
# set up persistent STMP if needed
if($self -> {"persist"}) {
eval { $self -> {"smtp"} = Email::Sender::Transport::SMTP::Persistent -> new(host => $self -> {"host"},
port => $self -> {"port"},
ssl => $self -> {"ssl"},
sasl_username => $self -> {"username"},
sasl_password => $self -> {"password"});
};
return SystemModule::set_error("SMTP Initialisation failed: $@") if($@);
}
return $self;
}
## @method void DESTROY()
# Destructor method to clean up persistent SMTP if it is in use.
sub DESTROY {
my $self = shift;
$self -> {"smtp"} -> disconnect()
if($self -> {"persist"} && $self -> {"smtp"});
}
# ============================================================================
# Delivery
## @method $ deliver($message)
# Attempt to deliver the specified message to its recipients.
#
# @param message A reference to hash containing the message data.
# @return True on success, undef on failure/error.
sub deliver {
my $self = shift;
my $message = shift;
if(!$self -> {"persist"}) {
eval { $self -> {"smtp"} = Email::Sender::Transport::SMTP -> new(host => $self -> {"host"},
port => $self -> {"port"},
ssl => $self -> {"ssl"},
sasl_username => $self -> {"username"},
sasl_password => $self -> {"password"});
};
return $self -> self_error("SMTP Initialisation failed: $@") if($@);
}
my ($from, $to) = ($self -> {"env_sender"}, "");
# Work out the the sender if needed...
if(!$self -> {"force_sender"} && $message -> {"sender"}) {
$from = $self -> _get_user_email($message -> {"sender"} -> {"sender_id"})
or return undef;
}
# And the recipients
foreach my $recipient (@{$message -> {"recipients"}}) {
my $recip = $self -> _get_user_email($recipient -> {"recipient_id"})
or return undef;
$to .= "," if($to);
$to .= $recip;
}
my $email = Email::MIME -> create(header_str => [ From => $from,
To => $to,
Subject => $message -> {"subject"}
],
body_str => Encode::encode_utf8($message -> {"body"}),
attributes => { charset => 'utf8',
content_type => "text/plain",
encoding => 'base64' });
try {
sendmail($email, { from => $self -> {"env_sender"},
transport => $self -> {"smtp"}});
} catch {
return $self -> self_error("Delivery of message ".$message -> {"id"}." failed: $_");
};
return 1;
}
# ============================================================================
# Support code
## @method private $ _get_user_email($userid)
# Obtain the email address set for the specified user. This class may be called outside
# the normal application environment, so it might not have access to the AppUser or Session
# classes - but it still needs email addresses! This looks directly into the user table
# to obtain the address.
#
# @param userid The ID of the user to fetch the email address for.
# @return The user's email address on success, undef on error.
sub _get_user_email {
my $self = shift;
my $userid = shift;
my $userh = $self -> {"dbh"} -> prepare("SELECT email
FROM ".$self -> {"settings"} -> {"database"} -> {"users"}."
WHERE user_id = ?");
$userh -> execute($userid)
or return $self -> self_error("Unable to perform user email lookup: ". $self -> {"dbh"} -> errstr);
my $user = $userh -> fetchrow_arrayref()
or return $self -> self_error("User email lookup failed: user $userid does not exist");
return $user -> [0];
}
1;

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@ -0,0 +1,44 @@
## @file
# This file contains the implementation of the Local Message Transport class.
#
# @author Chris Page &lt;chris@starforge.co.uk&gt;
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
## @class Message::Transport::Local
# This class implements the local delivery transport. Local delivery actually involves
# no work whatsoever - any messages that are queued for local deliver can always be
# delivered.
package Message::Transport::Local;
use strict;
use base qw(Message);
# ============================================================================
# Delivery
## @method $ deliver($message)
# Attempt to deliver the specified message to its recipients. This function
# is always successful - it is impossible for local delivery to fail, as the
# message is already there!
#
# @param message A reference to hash containing the message data.
# @return Always returns true.
sub deliver {
my $self = shift;
my $message = shift;
return 1;
}
1;