From 28dc5085dd2edaf55746a1c52fe2da2595ef372d Mon Sep 17 00:00:00 2001
From: Peter Palfrader <peter@palfrader.org>
Date: Mon, 19 Feb 2007 11:40:14 +0000
Subject: Send acks

git-svn-id: svn+ssh://asteria.noreply.org/svn/weaselutils/trunk@255 bc3d92e2-beff-0310-a7cd-cc87d7ac0ede
---
 split-mailman-mails-and-discard-and-save | 60 +++++++++++++++++++++++++++++++-
 1 file changed, 59 insertions(+), 1 deletion(-)

(limited to 'split-mailman-mails-and-discard-and-save')

diff --git a/split-mailman-mails-and-discard-and-save b/split-mailman-mails-and-discard-and-save
index ab02340..eb00669 100755
--- a/split-mailman-mails-and-discard-and-save
+++ b/split-mailman-mails-and-discard-and-save
@@ -28,6 +28,8 @@ check_maildir SPAMLEARN
 check_maildir HAMLEARN
 APPROVE_PASSWORD = YAML::load( File.open( 'mailman-passwords.yaml' ) )
 
+ERRORBOX  = "mail/errors"
+
 if ARGV[0] == "spam"
 	ACTION    = "spam"
 	MAILIN    = "mail/spam-in"
@@ -76,6 +78,14 @@ def uniqueName
 		HOSTNAME]
 end
 
+def move_mail_file(from, tofolder)
+	fn = uniqueName
+	target = tofolder+"/new/"+fn
+	File.link(from, target)
+	File.unlink(from)
+	target
+end
+
 def store_in_maildir(md, msg)
 	fn = uniqueName
 	File.open(md+"/tmp/"+fn, "w", 0600) do |f|
@@ -185,6 +195,38 @@ def bogo_check(message)
 	[c, out.join]
 end
 
+def fetch_resent_info(message)
+	origmsgid = message.header['Message-Id']
+	from = message.header['Resent-From']
+	date = message.header['Resent-Date']
+	msgid = message.header['Resent-Message-Id']
+	header = message.header.to_s
+
+	throw "Did not find Message-Id header in mail" unless origmsgid
+	throw "Did not find Resent-From header in mail" unless from
+	throw "Did not find Resent-Date header in mail" unless date
+	throw "Did not find Resent-Message-Id header in mail" unless msgid
+
+	return { 'origmsgid' => origmsgid,
+		 'from' => from,
+		 'date' => date,
+		 'msgid' => msgid,
+		 'header' => header }
+end
+
+def send_ack(action, resent_info)
+	mail = RMail::Message.new()
+	mail.header['From'] = FROM
+	mail.header['To'] = ERRORSTO
+	mail.header['Subject'] = "#{action} by #{resent_info['from']}"
+	mail.header['In-Reply-To'] = resent_info['origmsgid']
+	mail.header['References'] = resent_info['origmsgid']+' '+resent_info['msgid']
+	mail.body = "On #{resent_info['date']} #{resent_info['from']} #{action} this message.\n" +
+	            "\n" +
+	            "Request headers follow:\n" +
+	            resent_info['header']
+	store_in_maildir(OUTBOX, mail)
+end
 
 def process_mail(filename)
 	message = File.open(filename) { |f| RMail::Parser.read(f) }
@@ -212,11 +254,15 @@ def process_mail(filename)
 
 
 	if ACTION == "ham"
+		resent_info = fetch_resent_info(message)
 		store_in_maildir(HAMLEARN, held_part)
 		approve(cookie, request_address)
+		send_ack('APPROVED', resent_info)
 	elsif ACTION == "spam"
+		resent_info = fetch_resent_info(message)
 		store_in_maildir(SPAMLEARN, held_part)
 		discard(cookie, request_address)
+		send_ack('DISCARDED', resent_info)
 	elsif ACTION == "classify"
 		sa_class  , sa_text  , sa_score = sa_check(held_part)
 		bogo_class, bogo_text = bogo_check(held_part)
@@ -261,6 +307,18 @@ Dir[MAILIN+"/new/*"].each do |filename|
 		process_mail filename
 		File.unlink filename
 	rescue Exception => e
-		STDERR.puts "Error when processing #{filename}: #{e}"
+		begin
+			newname = move_mail_file(filename, ERRORBOX)
+			mail_error = RMail::Message.new()
+			mail_error.header['From'] = FROM
+			mail_error.header['To'] = ERRORSTO
+			mail_error.header['Subject'] = "handling of #{filename} failed"
+			mail_error.body = "Processing of #{filename} failed: #{e}\n" +
+			                  "Moved to #{newname}"
+			store_in_maildir(OUTBOX, mail_error)
+		rescue Exception => e2
+			STDERR.puts "Error when processing #{filename}: #{e}"
+			STDERR.puts "During error handling we encountered a new problem: #{e2}"
+		end
 	end
 end
-- 
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