I have found several sources describing a String Format used to describe WiFi-Access Settings in the form of:
WIFI:T:WPA;S:mynetwork;P:mypass;;
(example taken from zxing documentation)
For basic WPA-Connections, this works just fine on my Android Device using the Zxing-Barcode-Scanner-App. However, I have been unable to find a way to embed WPA2/EAP-Connection Settings (Also referred to as WPA2 Enterprise) into a scannable 2D-Code. As I expected, inserting "L" (Login), "N" (Name) or "I" (Identification) Parameters at random positions did not really bring any advance.
Has anyone here succeeded in "embedding" WiFi-Connection Settings into a 2D-Scannable Code to work with an Android device?
Thanks for your help!
I found some information on how to format the WiFi config string in the following pull request at the github page of the zxing library project: https://github.com/zxing/zxing/pull/865
The first post contains a template of the string format, including an error (the prefix AI: is wrong, it must read A:, see here). The correct format according to the source is thus:
WIFI:T:WPA2-EAP;S:[network SSID];H:[hidden?];E:[EAP method];PH2:[Phase 2 method];A:[anonymous identity];I:[username];P:[password];;
When I tried this (using the command line tool qrencode) my Barcode Scanner app crashed. After some trial and error I figured that the option for hiding the SSID can be left out:
WIFI:T:WPA2-EAP;S:[network SSID];E:[EAP method];PH2:[Phase 2 method];A:[anonymous identity];I:[username];P:[password];;
With this I'm getting a working entry in the list of known wireless networks in Android 8.
As of now there is no support for declaring a certificate and the respective domain. If this is needed, one can specify it later by adjusting the settings from inside Android's WiFi menu.
Related
I'm trying to provision a device with QR code method according to these documentations.
I'm using this Google collab quickstart guide to do so.
Right now, I'm stuck here:
enrollment_token = androidmanagement.enterprises().enrollmentTokens().create(
parent=enterprise_name,
body={
"policyName": policy_name,
"qrCode": "{'android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME': 'com.tmp.app.admin/.AdminReceiver','android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM': 'MUQ6NEQ6MDQ6NTY6M0E6ODA6Mzg6NEY6NUM6ODI6Qzk6NUY6MkM6QjA6RTk6RDc6QTM6RjI6NDg6NTA6QTQ6RjY6QTA6RjM6MTA6NUM6MzI6NkY6QkU6NUI6M0E6Qzk%3D','android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION':'https://myurl-stuff.com/link_part/my_app.apk','android.app.extra.PROVISIONING_SKIP_ENCRYPTION': false,'android.app.extra.PROVISIONING_WIFI_SSID': 'MY_WIFI_SSID','android.app.extra.PROVISIONING_WIFI_PASSWORD': 'my_wifi_password','android.app.extra.PROVISIONING_WIFI_SECURITY_TYPE': 'WPA'}"
}
).execute()
json.dumps(enrollment_token, indent=2)
Whenever I run this code, the output is the following.
{\n "name": "enterprises/LC00y54m79/enrollmentTokens/UV4yLfxoyWSln7CArwtp7OJQiHH_Gvc76JttPa4-r48",\n "value": "ZBNWPOWHBQUPNLMBTNRU",\n "expirationTimestamp": "2023-02-06T12:43:34.634467Z",\n "policyName": "enterprises/LC00y54m79/policies/policy1",\n "qrCode": "{\\"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME\\":\\"com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver\\",\\"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM\\":\\"I5YvS0O5hXY46mb01BlRjq4oJJGs2kuUcHvVkAPEXlg\\",\\"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION\\":\\"https://play.google.com/managed/downloadManagingApp?identifier=setup\\",\\"android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE\\":{\\"com.google.android.apps.work.clouddpc.EXTRA_ENROLLMENT_TOKEN\\":\\"ZBNWPOWHBQUPNLMBTNRU\\"}}"\n}
It is the default Google example and it does not contains my application, instead, it contains Google's official example app.
What am I doing here wrong?
EDIT:
I have syntax error with double quotes.
EDIT 2:
Also tried with starting and ending single quotes like:
'{"android.app.extra (...)
Also tried with starting and ending with triple quotes like in Google's previous example like here:
But still no luck.
The api either returns a syntax error or simple doesn't returns with my app/parameters in the qrCode, instead it replaces to their own example project.
EDIT 3:
Tried like this:
But with no success:
There are two ways to manage devices :
Provision a device with your own DPC : Your DPC is installed (referenced by an URL in the QR code). It fetches policies from your servers and applies them as a profile / device owner, without using any Google API (Android only).
Manage devices using Google Play EMM API. It is basically Google's layer on top of the Android API (but often called Android Management API, which is a bit confusing) : Your EMM console send policies to Google's servers. They are applied on the devices by Google's own DPC.
You are trying to mix the two approaches. It is no longer possible :
Android Enterprise is no longer accepting new registrations for custom device policy controllers (DPC) using the Google Play EMM API.
All new EMM solutions should now use Android Management API, which comes with its own DPC provided by Google.
The Google DPC is the com.google.android.apps.work.clouddpc you are seeing in the generated QR code.
If you want to use you own DPC, you need to use the json containing the android.app.extra.PROVISIONING* keys directly, without wrapping it in a Google token.
The content looks fine except the SSID has to be quoted, and the signature hash should not be percent encoded :
{
"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.tmp.app.admin/.AdminReceiver",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://myurl-stuff.com/link_part/my_app.apk",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "MUQ6NEQ6MDQ6NTY6M0E6ODA6Mzg6NEY6NUM6ODI6Qzk6NUY6MkM6QjA6RTk6RDc6QTM6RjI6NDg6NTA6QTQ6RjY6QTA6RjM6MTA6NUM6MzI6NkY6QkU6NUI6M0E6Qzk=",
"android.app.extra.PROVISIONING_SKIP_ENCRYPTION": false,
"android.app.extra.PROVISIONING_WIFI_PASSWORD": "my_wifi_password",
"android.app.extra.PROVISIONING_WIFI_SECURITY_TYPE": "WPA",
"android.app.extra.PROVISIONING_WIFI_SSID": "\"MY_WIFI_SSID\""
}
You just have to generate a QR code containing this content (with any generator), and scan it with the device.
Unfortunately the provisioning process is not forgiving. If something is wrong, the device shows a "Provisionning failed" error message without any clue. You have to triple check everything.
I'm developing an Android application that uses U.are.U 4500 fingerprint reader to identify users. I already have a backend server, that uses SQL Server, to store and register user data and now I need my app to be able to read the user fingerprint and verify if this fingerprint matches any of the fingerprints on the database. Does anyone know a SDK that is able to do this comparison?
I'm using asia.kanopi.fingerscan package to read the user fingerprint and I already have the scan working, now I only need to get this image and compare to the data on the SQL database. I saw a few answers here on StackOverflow telling me to use openCV library for Android, but none of them could give me any lead on how to do it.
I based my development on this tutorial: https://medium.com/touch4it/fingerprint-external-scanner-with-usb-database-sdk-64c3ec5ea82d, but unfortunately I couldn't find the SDK IDKit Fingerprint SDK Mobile anywhere.
How can I sucessufully match the image with the one stored on the database?
For those who are still looking for an answer to this problem. It's been a while since I actually implemented my solution and, when I did it, I added this line to my app gradle file:
com.github.lmone:SourceAFIS-Android:v3.4.0-fix3
But now I can't seem to find the github link anywhere. Maybe the repository got deleted. If someone find it, please send it to me so I can update my answer here.
Besides that, if you can still add the library to your Android project, the basic idea is to use a FingerprintMatcher to compare two FingerprintTemplate.
Example:
FingerprintTemplate probe = new FingerprintTemplate().dpi(500).create(digital_byte_array);
while (result.next()) {
byte[] imgCandidate = digital_to_compare;
FingerprintTemplate candidate = new FingerprintTemplate()
.dpi(500)
.create(imgCandidate);
double score = new FingerprintMatcher()
.index(probe)
.match(candidate);
if (score >= 40) {
// Found a match
}
}
In my case, I found the performance a little slow. It was usable, but nothing compared to Android's built-in fingerprint device. Also, the bigger your digitals collection, the longer it will take to find a match.
The score of the match is up for you to decide what suits better your project. 40 was a reliable amount in my case. The same goes to the FingerprintTemplate dpi.
Also, the method .create() receives a byte[] as parameter.
EDIT
I found this link and I'm almost certain it is the library I used, but under a new repository name:
https://github.com/robertvazan/sourceafis-java
The docs looks just the same as the code I used: https://sourceafis.machinezoo.com/java
To match a user on server side, you have to use an AFIS server : https://en.wikipedia.org/wiki/Integrated_Automated_Fingerprint_Identification_System
Here some providers of AFIS solution:
http://www.neurotechnology.com/megamatcher.html
https://www.nec.com.au/expertise/safety-security/identity-access/fingerprint
https://www.innovatrics.com/innovatrics-abis/
https://www.dermalog.com/products/software/civil-afis-abis/
http://www.m2sys.com/automated-fingerprint-identification-system-afis/
I'm new to Android development. I'm working on an app for use at work - I'm an EMT. I was hoping to use the state's registry as a means of authenticating the user as an active provider. https://ems.health.state.pa.us/emsreg/activepractitioners.aspx
I know nothing of asp, except that I should be able to pass some input through the URL with ?name=value. But when I inspect the element of the last name field...
input name="_ctl0:_ctl0:SessionLinkBar:Content:tbxLName" type="text"
id="_ctl0__ctl0_SessionLinkBar_Content_tbxLName"
I can't use this. Honestly not even sure what I'm looking at here. Is ":" a container?
Ultimately I'd like to take the user input on 2 edit texts (last name & certification #), click a button to POST them to the activepractitioners.aspx, and either get the whole response and pare down for what I need (Status Active, which I've yet to find labeled on the site) or verify the response then query its label.
I've tried a few of the methods here and I keep crashing the emulator. Also I'd rather not see all the strikethroughs in Android Studio from deprecated methods. I welcome all help, but please remember I'm a n00b - take it slow for me. Thanks!
UPDATE:
I've gotten some results using JSoup. I get to a landing page that should contain just one result (the certification # is unique) and a link. The format of the link is as follows:
<a id="_ctl0__ctl0_SessionLinkBar_Content_dgSearchResults__ctl2_lnk" href="javascript:__doPostBack('_ctl0$_ctl0$SessionLinkBar$Content$dgSearchResults$_ctl2$lnk','')">
It uses javascript to invoke "doPostBack." Any idea on how to automate this too? As it is I can parse the response to a document and scrape the table for the word "active." But I'd like a bit of fool-proofing. Thanks in advance!
Since you are new to Android dev, I suggest you to spend some time having a look to Google Android Volley APIs.
It allows you to easily set up GET and POST requests (and works great).
I'm using https://github.com/googledrive/appdatapreferences-android to synchronize preferences data. I got the example working at https://github.com/googledrive/appdatapreferences-android-quickstart.
Then I started implementing it in my own app. When I tried to install I got the error: Installation error: INSTALL_FAILED_CONFLICTING_PROVIDER. This error indicates that I had 2 providers with the same authority on the same device (which is NOT allowed). In this case the authority is "com.google.drive.appdatapreferences"
So I changed the authority in my app (manifest) to be distinct. But then the sync doesn't work anymore since the value is hard-coded in com.google.drive.appdatapreferences.AppdataPreferencesSyncManager.AUTHORITY = "com.sourcebrewery.appdatapreferences"
I really don't want to change the library code in appdatapreferences-android.
Is there any way around this? ...otherwise only 1 app per device can use this library :(
I have set up a specific TAG for logcat to follow a process. Now I want to email that specific TAG. I am set with emailing thing. I want to know how can I get specific TAG and not the whole logcat.
In my opinion, using CatLog or LogViewer Lite (free on Google Play) is the best, allows you to record and filter (i.e. by tag) the log and send directly via email from the device.
CatLog: https://play.google.com/store/apps/details?id=com.nolanlawson.logcat
LogViewer Lite: https://play.google.com/store/apps/details?id=ukzzang.android.app.logviewer
You can of course also use adb and command line to grep and output the log to a file when the device is connected via usb (see Filter output in logcat by tagname), but the tools mentioned above are quite handy actually.
Update:
If you want it automated without interaction, this lib mentioned in the thread below might be handy:
How to send logcat via email?, which refers to http://code.google.com/p/android-log-collector/