From b3160638ea4f4d43a36233816bea7aeb6f5164bd Mon Sep 17 00:00:00 2001
From: =?utf8?q?Alexis=20Laferri=C3=A8re?= <alexis.laf@xymus.net>
Date: Fri, 25 Jul 2014 19:14:20 -0400
Subject: [PATCH] lib: intro the sendmail module
MIME-Version: 1.0
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Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---
 lib/sendmail.nit |  108 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 lib/sendmail.nit

diff --git a/lib/sendmail.nit b/lib/sendmail.nit
new file mode 100644
index 0000000..c8be5f8
--- /dev/null
+++ b/lib/sendmail.nit
@@ -0,0 +1,108 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Send emails using the `sendmail` program
+#
+# Usage example:
+# ~~~~
+# if sendmail_is_available then
+#     var mail = new Mail("from@example.com", "Title", "Content")
+#     mail.to.add "to@example.org"
+#     mail.send
+# else print "please install sendmail"
+# ~~~~
+module sendmail
+
+import base64
+
+# Can we find the external program `sendmail`?
+fun sendmail_is_available: Bool do return "sendmail".program_is_in_path
+
+# An email to be sent using `sendmail`
+class Mail
+
+	# Sender of this email
+	var from: String is writable
+
+	# Recipients of the message
+	var to = new Array[String]
+
+	# Recipients of a carbon copy of the message
+	var cc = new Array[String]
+
+	# Recipients of a blind carbon copy of the message
+	var bcc = new Array[String]
+
+	# Subject of this mail
+	var subject: String is writable
+
+	# Content of this mail
+	var content: String is writable
+
+	# Metadata in the header of this mail
+	var header = new HashMap[String, String]
+
+	# Should the content of this email be encrypted using base64?
+	#
+	# This will also set the header `Content-Transfer-Encoding` to base64.
+	# By default, the encoding is 8bit.
+	var encrypt_with_base64 = false
+
+	# Send this mail using the `sendmail` command
+	#
+	# require: `sendmail_is_available`
+	fun send: Bool
+	do
+		assert sendmail_is_available
+
+		# All recipients
+		var all = new Array[String]
+		all.add_all to
+		all.add_all cc
+		all.add_all bcc
+
+		var proc = new OProcess("sendmail", all.join(","))
+		if proc.is_writable then proc.write to_s
+		proc.close
+		proc.wait
+		var status = proc.status
+		return status == 0
+	end
+
+	redef fun to_s
+	do
+		# Set encoding (and encode if needed)
+		var content = content
+		var encoding
+		if encrypt_with_base64 then
+			content = content.encode_base64
+			encoding = "base64"
+		else
+			encoding = "8bit"
+		end
+		header["Content-Transfer-Encoding"] = encoding
+
+		# Generate expected format
+		return """
+From: {{{from}}}\r
+To: {{{to.join(",")}}}\r
+CC: {{{cc.join(",")}}}\r
+BCC: {{{bcc.join(",")}}}\r
+Subject: {{{subject}}}\r
+{{{header.join("\r\n", ": ")}}}\r
+{{{content}}}"""
+	end
+end
-- 
1.7.9.5