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Mail Server Solution(6)Email Scan and Auth on Client
1. Does Gmail API Support Forwarding, NO
We can set up customer filter manually
https://support.google.com/mail/answer/6579?hl=en
We can use the admin SDK to set up filter for enterprise domain account with the administrator user.
https://developers.google.com/admin-sdk/email-settings/
Or we need to download the email content and send a new email ourselves.
2. Scan the Email and Download the Attachment from Client
I plan to use JavaScript. Here is the list
https://developers.google.com/api-client-library/
Here is the API for javascript.
https://developers.google.com/api-client-library/javascript/
https://developers.google.com/api-client-library/javascript/samples/samples
Gmail API JavaScript Client
https://developers.google.com/gmail/api/quickstart/js
3. Set up Env
Check the python version. Life is short, let’s use python. haha.
> python -V
Python 2.7.6
Create a very simple html file index.html
> cat index.html
Hello, Sillycat.
This will start the web server
> python -m SimpleHTTPServer 8000
We can visit the page for testing
http://localhost:8000/index.html
4. Gmail JavaScript API Implementation
<html>
<head>
<script type="text/javascript">
// Your Client ID can be retrieved from your project in the Google
// Developer Console, https://console.developers.google.com
var CLIENT_ID = ‘xxxxx';
var SCOPES = ['https://www.googleapis.com/auth/gmail.readonly'];
/**
* Check if current user has authorized this application.
*/
function checkAuth() {
gapi.auth.authorize(
{
'client_id': CLIENT_ID,
'scope': SCOPES,
'immediate': true
}, handleAuthResult);
}
/**
* Handle response from authorization server.
*
* @param {Object} authResult Authorization result.
*/
function handleAuthResult(authResult) {
var authorizeDiv = document.getElementById('authorize-div');
if (authResult && !authResult.error) {
// Hide auth UI, then load client library.
authorizeDiv.style.display = 'none';
loadGmailApi();
} else {
// Show auth UI, allowing the user to initiate authorization by
// clicking authorize button.
authorizeDiv.style.display = 'inline';
}
}
/**
* Initiate auth flow in response to user clicking authorize button.
*
* @param {Event} event Button click event.
*/
function handleAuthClick(event) {
gapi.auth.authorize(
{client_id: CLIENT_ID, scope: SCOPES, immediate: false},
handleAuthResult);
return false;
}
/**
* Load Gmail API client library. List labels once client library
* is loaded.
*/
function loadGmailApi() {
gapi.client.load('gmail', 'v1', listLabels);
gapi.client.load('gmail', 'v1', function(){
listMessages("me", "craigslist.org has:attachment larger:50K", messageQueryCallback);
});
}
function messageQueryCallback(res){
//console.log("message query response:" + JSON.stringify(res, null, 4));
gapi.client.load('gmail', 'v1', function(){
getMessage("me", “xxxxxx", getMessageCallback);
});
}
function getMessageCallback(res){
//console.log("message get response:" + JSON.stringify(res.payload.parts, null, 4));
var parts = res.payload.parts;
for(var i = 0; i < parts.length; i++){
//console.log("message get response:" + JSON.stringify(parts[i].mimeType));
var type = parts[i].mimeType;
if( type === 'application/pdf' || type === 'application/doc'){
//console.log("message get response:" + JSON.stringify(parts[i].body.attachmentId));
var attachmentId = JSON.stringify(parts[i].body.attachmentId);
console.log("attachment get response:" + attachmentId);
var attachmentId = “xxxxxxx";
gapi.client.load('gmail', 'v1', function(){
getAttachments("me", attachmentId, “xxxxxx", getAttachmentCallback);
});
}
}
}
function getAttachmentCallback(res){
//console.log("attachment get response:" + JSON.stringify(res.data, null, 4));
}
function getAttachments(userId, attachmentId, messageId, callback) {
var request = gapi.client.gmail.users.messages.attachments.get({
'id': attachmentId,
'messageId': messageId,
'userId': userId
});
request.execute(function(attachment) {
callback(attachment);
});
}
/**
* Get Message with given ID.
*
* @param {String} userId User's email address. The special value 'me'
* can be used to indicate the authenticated user.
* @param {String} messageId ID of Message to get.
* @param {Function} callback Function to call when the request is complete.
*/
function getMessage(userId, messageId, callback) {
var request = gapi.client.gmail.users.messages.get({
'userId': userId,
'id': messageId
});
request.execute(callback);
}
/**
* Retrieve Messages in user's mailbox matching query.
*
* @param {String} userId User's email address. The special value 'me'
* can be used to indicate the authenticated user.
* @param {String} query String used to filter the Messages listed.
* @param {Function} callback Function to call when the request is complete.
*/
function listMessages(userId, query, callback) {
var getPageOfMessages = function(request, result) {
request.execute(function(resp) {
result = result.concat(resp.messages);
var nextPageToken = resp.nextPageToken;
if (nextPageToken) {
request = gapi.client.gmail.users.messages.list({
'userId': userId,
'pageToken': nextPageToken,
'q': query
});
getPageOfMessages(request, result);
} else {
callback(result);
}
});
};
var initialRequest = gapi.client.gmail.users.messages.list({
'userId': userId,
'q': query
});
getPageOfMessages(initialRequest, []);
}
/**
* Print all Labels in the authorized user's inbox. If no labels
* are found an appropriate message is printed.
*/
function listLabels() {
var request = gapi.client.gmail.users.labels.list({
'userId': 'me'
});
request.execute(function(resp) {
var labels = resp.labels;
appendPre('Labels:');
if (labels && labels.length > 0) {
for (i = 0; i < labels.length; i++) {
var label = labels[i];
appendPre(label.name)
}
} else {
appendPre('No Labels found.');
}
});
}
/**
* Append a pre element to the body containing the given message
* as its text node.
*
* @param {string} message Text to be placed in pre element.
*/
function appendPre(message) {
var pre = document.getElementById('output');
var textContent = document.createTextNode(message + '\n');
pre.appendChild(textContent);
}
</script>
<script src="https://apis.google.com/js/client.js?onload=checkAuth">
</script>
</head>
<body>
<div id="authorize-div" style="display: none">
<span>Authorize access to Gmail API</span>
<!--Button for the user to click to initiate auth sequence -->
<button id="authorize-button" onclick="handleAuthClick(event)">
Authorize
</button>
</div>
<pre id="output"></pre>
</body>
</html>
References:
Mail Server Solution 1 ~ 5
http://sillycat.iteye.com/blog/2228923
http://sillycat.iteye.com/blog/2229222
http://sillycat.iteye.com/blog/2230801
http://sillycat.iteye.com/blog/2232877
http://sillycat.iteye.com/blog/2232889
http://stackoverflow.com/questions/24908700/mail-attachment-wrong-media-type-gmail-api
https://developers.google.com/gmail/api/guides/sending
https://developers.google.com/admin-sdk/email-settings/#manage_filters
https://developers.google.com/admin-sdk/email-settings/
https://developers.google.com/identity/sign-in/web/
meteor library load
http://stackoverflow.com/questions/22723300/how-do-you-include-3rd-party-javascript-libraries-in-meteor-js
https://atmospherejs.com/slava/gmail
package meteor library myself
http://www.meteorpedia.com/read/Packaging_existing_Libraries
https://github.com/MeteorCommunity/discussions/issues/14
1. Does Gmail API Support Forwarding, NO
We can set up customer filter manually
https://support.google.com/mail/answer/6579?hl=en
We can use the admin SDK to set up filter for enterprise domain account with the administrator user.
https://developers.google.com/admin-sdk/email-settings/
Or we need to download the email content and send a new email ourselves.
2. Scan the Email and Download the Attachment from Client
I plan to use JavaScript. Here is the list
https://developers.google.com/api-client-library/
Here is the API for javascript.
https://developers.google.com/api-client-library/javascript/
https://developers.google.com/api-client-library/javascript/samples/samples
Gmail API JavaScript Client
https://developers.google.com/gmail/api/quickstart/js
3. Set up Env
Check the python version. Life is short, let’s use python. haha.
> python -V
Python 2.7.6
Create a very simple html file index.html
> cat index.html
Hello, Sillycat.
This will start the web server
> python -m SimpleHTTPServer 8000
We can visit the page for testing
http://localhost:8000/index.html
4. Gmail JavaScript API Implementation
<html>
<head>
<script type="text/javascript">
// Your Client ID can be retrieved from your project in the Google
// Developer Console, https://console.developers.google.com
var CLIENT_ID = ‘xxxxx';
var SCOPES = ['https://www.googleapis.com/auth/gmail.readonly'];
/**
* Check if current user has authorized this application.
*/
function checkAuth() {
gapi.auth.authorize(
{
'client_id': CLIENT_ID,
'scope': SCOPES,
'immediate': true
}, handleAuthResult);
}
/**
* Handle response from authorization server.
*
* @param {Object} authResult Authorization result.
*/
function handleAuthResult(authResult) {
var authorizeDiv = document.getElementById('authorize-div');
if (authResult && !authResult.error) {
// Hide auth UI, then load client library.
authorizeDiv.style.display = 'none';
loadGmailApi();
} else {
// Show auth UI, allowing the user to initiate authorization by
// clicking authorize button.
authorizeDiv.style.display = 'inline';
}
}
/**
* Initiate auth flow in response to user clicking authorize button.
*
* @param {Event} event Button click event.
*/
function handleAuthClick(event) {
gapi.auth.authorize(
{client_id: CLIENT_ID, scope: SCOPES, immediate: false},
handleAuthResult);
return false;
}
/**
* Load Gmail API client library. List labels once client library
* is loaded.
*/
function loadGmailApi() {
gapi.client.load('gmail', 'v1', listLabels);
gapi.client.load('gmail', 'v1', function(){
listMessages("me", "craigslist.org has:attachment larger:50K", messageQueryCallback);
});
}
function messageQueryCallback(res){
//console.log("message query response:" + JSON.stringify(res, null, 4));
gapi.client.load('gmail', 'v1', function(){
getMessage("me", “xxxxxx", getMessageCallback);
});
}
function getMessageCallback(res){
//console.log("message get response:" + JSON.stringify(res.payload.parts, null, 4));
var parts = res.payload.parts;
for(var i = 0; i < parts.length; i++){
//console.log("message get response:" + JSON.stringify(parts[i].mimeType));
var type = parts[i].mimeType;
if( type === 'application/pdf' || type === 'application/doc'){
//console.log("message get response:" + JSON.stringify(parts[i].body.attachmentId));
var attachmentId = JSON.stringify(parts[i].body.attachmentId);
console.log("attachment get response:" + attachmentId);
var attachmentId = “xxxxxxx";
gapi.client.load('gmail', 'v1', function(){
getAttachments("me", attachmentId, “xxxxxx", getAttachmentCallback);
});
}
}
}
function getAttachmentCallback(res){
//console.log("attachment get response:" + JSON.stringify(res.data, null, 4));
}
function getAttachments(userId, attachmentId, messageId, callback) {
var request = gapi.client.gmail.users.messages.attachments.get({
'id': attachmentId,
'messageId': messageId,
'userId': userId
});
request.execute(function(attachment) {
callback(attachment);
});
}
/**
* Get Message with given ID.
*
* @param {String} userId User's email address. The special value 'me'
* can be used to indicate the authenticated user.
* @param {String} messageId ID of Message to get.
* @param {Function} callback Function to call when the request is complete.
*/
function getMessage(userId, messageId, callback) {
var request = gapi.client.gmail.users.messages.get({
'userId': userId,
'id': messageId
});
request.execute(callback);
}
/**
* Retrieve Messages in user's mailbox matching query.
*
* @param {String} userId User's email address. The special value 'me'
* can be used to indicate the authenticated user.
* @param {String} query String used to filter the Messages listed.
* @param {Function} callback Function to call when the request is complete.
*/
function listMessages(userId, query, callback) {
var getPageOfMessages = function(request, result) {
request.execute(function(resp) {
result = result.concat(resp.messages);
var nextPageToken = resp.nextPageToken;
if (nextPageToken) {
request = gapi.client.gmail.users.messages.list({
'userId': userId,
'pageToken': nextPageToken,
'q': query
});
getPageOfMessages(request, result);
} else {
callback(result);
}
});
};
var initialRequest = gapi.client.gmail.users.messages.list({
'userId': userId,
'q': query
});
getPageOfMessages(initialRequest, []);
}
/**
* Print all Labels in the authorized user's inbox. If no labels
* are found an appropriate message is printed.
*/
function listLabels() {
var request = gapi.client.gmail.users.labels.list({
'userId': 'me'
});
request.execute(function(resp) {
var labels = resp.labels;
appendPre('Labels:');
if (labels && labels.length > 0) {
for (i = 0; i < labels.length; i++) {
var label = labels[i];
appendPre(label.name)
}
} else {
appendPre('No Labels found.');
}
});
}
/**
* Append a pre element to the body containing the given message
* as its text node.
*
* @param {string} message Text to be placed in pre element.
*/
function appendPre(message) {
var pre = document.getElementById('output');
var textContent = document.createTextNode(message + '\n');
pre.appendChild(textContent);
}
</script>
<script src="https://apis.google.com/js/client.js?onload=checkAuth">
</script>
</head>
<body>
<div id="authorize-div" style="display: none">
<span>Authorize access to Gmail API</span>
<!--Button for the user to click to initiate auth sequence -->
<button id="authorize-button" onclick="handleAuthClick(event)">
Authorize
</button>
</div>
<pre id="output"></pre>
</body>
</html>
References:
Mail Server Solution 1 ~ 5
http://sillycat.iteye.com/blog/2228923
http://sillycat.iteye.com/blog/2229222
http://sillycat.iteye.com/blog/2230801
http://sillycat.iteye.com/blog/2232877
http://sillycat.iteye.com/blog/2232889
http://stackoverflow.com/questions/24908700/mail-attachment-wrong-media-type-gmail-api
https://developers.google.com/gmail/api/guides/sending
https://developers.google.com/admin-sdk/email-settings/#manage_filters
https://developers.google.com/admin-sdk/email-settings/
https://developers.google.com/identity/sign-in/web/
meteor library load
http://stackoverflow.com/questions/22723300/how-do-you-include-3rd-party-javascript-libraries-in-meteor-js
https://atmospherejs.com/slava/gmail
package meteor library myself
http://www.meteorpedia.com/read/Packaging_existing_Libraries
https://github.com/MeteorCommunity/discussions/issues/14
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Stop Update Here
2020-04-28 09:00 310I will stop update here, and mo ... -
NodeJS12 and Zlib
2020-04-01 07:44 468NodeJS12 and Zlib It works as ... -
Docker Swarm 2020(2)Docker Swarm and Portainer
2020-03-31 23:18 362Docker Swarm 2020(2)Docker Swar ... -
Docker Swarm 2020(1)Simply Install and Use Swarm
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Traefik 2020(1)Introduction and Installation
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Portainer 2020(4)Deploy Nginx and Others
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Private Registry 2020(1)No auth in registry Nginx AUTH for UI
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NodeJS ENV Similar to JENV and PyENV
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Prometheus HA 2020(3)AlertManager Cluster
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