Implement Mail service.

impl/memory/mail_static_lists.go

Index: impl/memory/mail_static_lists.go
diff --git a/impl/memory/mail_static_lists.go b/impl/memory/mail_static_lists.go
new file mode 100644
index 0000000000000000000000000000000000000000..87ea2408ae2b0e4b40293ff9dd69e3fe1aad6e1d
--- /dev/null
+++ b/impl/memory/mail_static_lists.go
@@ -0,0 +1,159 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package memory
+
+import (
+	"github.com/luci/luci-go/common/stringset"
+)
+
+// all of these constants were imported on Mon Dec 14 18:18:00 PST 2015 from
+// https://cloud.google.com/appengine/docs/go/mail/
+
+var okHeaders = stringset.NewFromSlice(
+	"In-Reply-To",
+	"List-Id",
+	"List-Unsubscribe",
+	"On-Behalf-Of",
+	"References",
+	"Resent-Date",
+	"Resent-From",
+	"Resent-To",
+)
+
+var okMimeTypes = stringset.NewFromSlice(
+	"application/msword",
+	"application/pdf",
+	"application/rss+xml",
+	"application/vnd.google-earth.kml+xml",
+	"application/vnd.google-earth.kmz",
+	"application/vnd.ms-excel",
+	"application/vnd.ms-powerpoint",
+	"application/vnd.oasis.opendocument.presentation",
+	"application/vnd.oasis.opendocument.spreadsheet",
+	"application/vnd.oasis.opendocument.text",
+	"application/vnd.sun.xml.calc",
+	"application/vnd.sun.xml.writer",
+	"application/x-gzip",
+	"application/zip",
+	"audio/basic",
+	"audio/flac",
+	"audio/mid",
+	"audio/mp4",
+	"audio/mpeg",
+	"audio/ogg",
+	"audio/x-aiff",
+	"audio/x-wav",
+	"image/gif",
+	"image/jpeg",
+	"image/png",
+	"image/tiff",
+	"image/vnd.wap.wbmp",
+	"image/x-ms-bmp",
+	"text/calendar",
+	"text/comma-separated-values",
+	"text/css",
+	"text/html",
+	"text/plain",
+	"text/x-vcard",
+	"video/mp4",
+	"video/mpeg",
+	"video/ogg",
+	"video/quicktime",
+	"video/x-msvideo",
+)
+
+var badExtensions = stringset.NewFromSlice(
+	"ade",
+	"adp",
+	"bat",
+	"chm",
+	"cmd",
+	"com",
+	"cpl",
+	"exe",
+	"hta",
+	"ins",
+	"isp",
+	"jse",
+	"lib",
+	"mde",
+	"msc",
+	"msp",
+	"mst",
+	"pif",
+	"scr",
+	"sct",
+	"shb",
+	"sys",
+	"vb",
+	"vbe",
+	"vbs",
+	"vxd",
+	"wsc",
+	"wsf",
+	"wsh",
+)
+
+var extensionMapping = map[string]string{
+	"aif":  "audio/x-aiff",
+	"aifc": "audio/x-aiff",
+	"aiff": "audio/x-aiff",
+	"asc":  "text/plain",
+	"au":   "audio/basic",
+	"avi":  "video/x-msvideo",
+	"bmp":  "image/x-ms-bmp",
+	"css":  "text/css",
+	"csv":  "text/comma-separated-values",
+	"diff": "text/plain",
+	"doc":  "application/msword",
+	"docx": "application/msword",
+	"flac": "audio/flac",
+	"gif":  "image/gif",
+	"gzip": "application/x-gzip",
+	"htm":  "text/html",
+	"html": "text/html",
+	"ics":  "text/calendar",
+	"jpe":  "image/jpeg",
+	"jpeg": "image/jpeg",
+	"jpg":  "image/jpeg",
+	"kml":  "application/vnd.google-earth.kml+xml",
+	"kmz":  "application/vnd.google-earth.kmz",
+	"m4a":  "audio/mp4",
+	"mid":  "audio/mid",
+	"mov":  "video/quicktime",
+	"mp3":  "audio/mpeg",
+	"mp4":  "video/mp4",
+	"mpe":  "video/mpeg",
+	"mpeg": "video/mpeg",
+	"mpg":  "video/mpeg",
+	"odp":  "application/vnd.oasis.opendocument.presentation",
+	"ods":  "application/vnd.oasis.opendocument.spreadsheet",
+	"odt":  "application/vnd.oasis.opendocument.text",
+	"oga":  "audio/ogg",
+	"ogg":  "audio/ogg",
+	"ogv":  "video/ogg",
+	"pdf":  "application/pdf",
+	"png":  "image/png",
+	"pot":  "text/plain",
+	"pps":  "application/vnd.ms-powerpoint",
+	"ppt":  "application/vnd.ms-powerpoint",
+	"pptx": "application/vnd.ms-powerpoint",
+	"qt":   "video/quicktime",
+	"rmi":  "audio/mid",
+	"rss":  "application/rss+xml",
+	"snd":  "audio/basic",
+	"sxc":  "application/vnd.sun.xml.calc",
+	"sxw":  "application/vnd.sun.xml.writer",
+	"text": "text/plain",
+	"tif":  "image/tiff",
+	"tiff": "image/tiff",
+	"txt":  "text/plain",
+	"vcf":  "text/x-vcard",
+	"wav":  "audio/x-wav",
+	"wbmp": "image/vnd.wap.wbmp",
+	"xls":  "application/vnd.ms-excel",
+	"xlsx": "application/vnd.ms-excel",
+	"zip":  "application/zip",
+}