I'm quite new to the world of the IOT (protocols). I want to update some devices remotely (they will be installed about 8000km away from my working place). I have found out that LWM2M would fit to my scope.
Because the internet connection there is not stable and the bandwidth is low, I have decided to also install a Raspberry Pi to collect the data of the sensors and to install a Leshan server to trigger the updates.
I have tested the devices and I can register them to the Leshan server on the Pi, read some data, and reboot the devices. The problem is, I don't know where to save my binary file for the update, so that the device can download them.
I tried following steps:
Save the file on [leshan-dir]/update.bin.
Write the "Package URI": coap://[raspi-IP]:5683/update.bin
After that, the backgroud color of the button "Write" changes to green.
Execute the update
The response of the server is 404 [Not Found].
I have looked for any API to find out where I can save the .bin file, but without success. And because nobody seems to have had a similar error, I start thinking I have missed some points.
Where do I have to save the files on the Raspbery Pi, so that I can perform an update?
I found a solution for the problem I exposed above.
I use from the californium-project the demo-app cf-simplefile-server (Ref. https://github.com/eclipse/californium/tree/2.0.x/demo-apps/cf-simplefile-server)
Note: You have to checkout to the git-branch 2.0.x to use it.
To run the leshan server and the file-server on the same machine I had to change the port of one of the server using the file Californium.properties.
I decide to change the ones of the file-server to 5685 and 5686
When both server runs I can insert in Package URI something like:
coap://[[ip_of_the_pi]]:5685/data/[[name_of_the_firmware_file]]
Probably there are better solution for it, but for a coap/lwm2m beginner like it works very well.
Note: If you have bigger file to transfer you can also change the property MAX_RESOURCE_BODY_SIZE
I hope this may help somebody.
Regards,
Elvys
Related
We've recently discovered that Xcode Server (i.e. a Bot) will keep all past integrations. (We discovered this as the builds started failing and we realized the CI server was completely out of disk space).
How can you configure a bot (or the server in general) to only keep the last n integrations? Or even the last n days?
If there is no built-in setting, is there a way to accomplish this via a cron job that doesn't have to use the unofficial XCode Server API?
The current max disk size is a ratio of 0.75 of the capacity (if I understand the output well). You can see it for yourself if you run curl -k -u USER:PASS https://localhost:20343/api/settings. You might be able to change it by calling this API as a PATCH request with a modified value for max_percent_disk_usage to something smaller and then giving it time to clean up. I haven't tested that however.
If you're interested in how this works, see /Applications/Xcode.app/Contents/Developer/usr/share/xcs/xcsd/routes/routes_setting.js line 19. From there you should be able to dig deeper and see for yourself.
Hope this helps.
This was very helpful, #czechboy!
The JSON document returned when you fetch the settings will contain the _id of the xcode instance whose settings you wish to modify, and you must send the PATCH request to https://localhost:20343/api/settings/<id>. The body of the request should be something like:
{ "set_props": { "max_percent_disk_usage": 0.40 } }
After doing this I needed to restart the server before old files were cleaned up.
I am porting over an MSBuild script from CCnet to run in Jenkins. The MSBuild project is used to create a deployment package. I would rather have Jenkins drive this process itself but that's a longer term aim.
The problem i am having is (as in the title) when we try and use the HgPull target, from the MSBuild mecurial task (http://msbuildhg.codeplex.com/) we get the error message
HgProcessException: The command hg.exe is not available [Path to project]
I have seen on the project web site that someone solved it by adding the LibraryLocation proeprty to the target but that seems to have made no difference. My target currently looks like this:
Target Name="UpdateSources">
<HgPull
LibraryLocation="C:\Program Files\TortoiseHg\hg.exe"
Force="true"
Update="true"
LocalPath="$(SourcePath)"
/>
<HgUpdate
LibraryLocation="C:\Program Files\TortoiseHg\hg.exe"
Clean="true"
LocalPath="$(SourcePath)"
/>
I'm rather at a loss. Please let me know if you need any more information added to this post to solve this issue. I'm really quite new to MSBuild so really not sure where to start investigating this.
EDIT:
One thing i forgot to mention was that i have tried running the MSbuild command in a console window on the build server and still get the same result. This is really odd given it works fine in CCNet, what magic is CCNet doing to make this command work?
This is now resolved, unfortunately i'm not sure what changes i made to correct these. I believe it may have been down to path separators and whether they where trailing or not in another part of the config file. It does so annoy me with the lack of resilience/consistency between applications where you need to specify paths with/without trailing slashes.
Just a thought, but try adding 'C:\Program Files\TortoiseHg' to your system path. Maybe CCNet has it specified somewhere that Jenkins doesn't have access to.
Also, just for sanity's sake, verify that hg.exe actually exists at that location.
During packaging the Windows Store application, I get an unspecified error [APPX1204]:
C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v11.0\AppxPackage\Microsoft.AppXPackage.Targets(1139,9): error APPX1204: Failed to sign 'D:\Projects\VS2012\Stroik\Stroik\AppPackages\Stroik_1.0.0.11_AnyCPU_Test\Stroik_1.0.0.11_AnyCPU.appx'. SignTool Error: An unexpected internal error has occurred.
Build output refers to the part of a file generated by VS2012:
<SignAppxPackage AppxPackageToSign="#(FinalAppxPackageItem)"
CertificateThumbprint="$(PackageCertificateThumbprint)"
CertificateFile="$(PackageCertificateKeyFile)"
HashUri="$(_HashUri)"
EnableSigningChecks="$(EnableSigningChecks)"
>
<Output TaskParameter="ResolvedThumbprint" PropertyName="ResolvedThumbPrint"/>
<Output TaskParameter="AppxPackagePublicKeyFile" PropertyName="AppxPackagePublicKeyFile" />
</SignAppxPackage>
Yesterday packaging proceeded successfully. Today I added aditional logic to my app and changed some data in manifest. Since then I'm reciving presented error. I tried to regenerate Certificate in Packaging menu, delete Store/Temporary Keys (then regenerate), ... much more but nothing helps.
Now I have no idea how to handle it. Furthermore packaging a new project (as it is provided by vs2012) results in the same error.
Have you got any suggestions how to solve it.
If it helps anyone else, I was trying to make the build on a network share (virtualizing windows). Creating it on the Windows partition solved the issue.
I was developing on a Virtual Machine in VirtualBox and tryed to publish to the shared folder.
Change the output folder to a local folder on the virtual maschine solved it.
Granted this is older - see if you can try it with a different live id
You could also try to generate a new app, and diff the manifests between the apps.
Now according to:
http://social.msdn.microsoft.com/Forums/en-US/toolsforwinapps/thread/f25939fb-c48c-4bd0-938e-6a0afbd2dca0/
you may want to sign out, use IE 'in safe private browsing' and create a new one.
Also ensure that IE is set in "Browsing History->Settings" to get a new version of the page every time.
Login with the new one and give it a try.
I'm not sure if this error is related here or not, but it's a starting point based on the prior feedback on the above post.
This japanese site lists the same error code and seems to have the same resolution as well
http://coelacanth.heteml.jp/blog/windows-8signtool-error-an-unexpected-internal-error-has-occurred/
Its worth a shot, but I'll admit on this one not being 100% sure, just trying to help out : )
On Mac Os, I see that all content on my application can be readable (mxml and as files).
Indeed with right clic on application, you can see all application content and so all files.
So It's very dangerous for a company to distribute air application like that.
Is a solution exist to protect those files.
Thanks
It is not possible to protect 100% your code. After all, if the computer can run it, it can be decompiled, regardless of the language. However, you can make it more difficult.
One method is to encrypt the swf as stated in another answer. But all the "attacker" needs to do is find the key and then they can decrypt all your swfs.
Another method is to use obfuscators. Obfuscators don't depend on encryption, nor they prevent decompiling, they just make it harder to understand what gets decompiled.
For example if you had a method called saveInvoice() the obfuscator would rename it to aa1() or something like that, so it would make it diffucult to guess what that function does. It basically turns everything into spaguetti code.
You can use a decompiler to see what can be obtained from a SWF file (which is alot), and play with obfuscators to see if they meet your espectations.
An example of one is http://www.kindi.com/ which I'm not endorsing btw, it just shows up quickly on google.
Although there are loads of decompilers which can read all your code. There is one guy who came up with encryption solution it might worth a try. (It's for Desktop AIR applications)
Have a look at this post: http://forums.adobe.com/message/3510525#3510525
Quoted text (in case of page being erased)
The method I use will allow you encrpyt most of your source code using
a key that is unique to every computer. The initial download of my
software is a simple air app that does not contain the actual program.
It is more like a shell that first retreaves a list of the clients mac
addresses and the user entered activation code that is created at time
of purchase. This is sent to server and logged. The activation code
is saved to a file client side. At the server the mac address and
activation key are used to create the encryption key. The bulk of the
program code is then encrypted using that key, then divided into parts
and sent back to the client. The client puts the parts back together
and saves the encrypted file. At runtime the shell finds the mac
address list and the activation key, then using same method as server
gets the encryption key and decrypts the program file. Run simple
check to make sure it loaded. For encyption i found an aes method that
works in php and javascript.
Next I use this code to load the program
var loader = air.HTMLLoader.createRootWindow(true, options, true, windowBounds);
loader.cacheResponse=false;
loader.placeLoadStringContentInApplicationSandbox=true;
loader.loadString(page);
This method makes it very difficult to copy
to another computer although since I wrote it i know there are some
weeknesses in the security but to make it harder i obv. the shell
code. It at least keeps most from pirating. However there are issues
with this that I have found. First i was using networkInfo to get the
list of mac address but this failed in a test windows XP computer.
When the wireless was off it did not return the MAC. I was not able
to recreate this in VISTA or 7. Not sure if it could happen. Was not
tested on a mac computer. To fix this (at least for windows). I
wrote a simple bat file that gets the MAC list, then converted it to
an exe which is included. This does force you to create native
installers. call the exe with this
var nativeProcessStartupInfo = new air.NativeProcessStartupInfo();
var file = air.File.applicationDirectory.resolvePath("findmac.exe");
nativeProcessStartupInfo.executable = file;
process = new air.NativeProcess();
process.start(nativeProcessStartupInfo);
process.addEventListener(air.ProgressEvent.STANDARD_OUTPUT_DATA, onOutputData);
process.addEventListener(air.ProgressEvent.STANDARD_ERROR_DATA, onErrorData);
process.addEventListener(air.NativeProcessExitEvent.EXIT, onExit);
process.addEventListener(air.IOErrorEvent.STANDARD_OUTPUT_IO_ERROR, onIOError);
process.addEventListener(air.IOErrorEvent.STANDARD_ERROR_IO_ERROR, onIOError);
put the list together in the onOutputData event using array.push and
continue on the onExit event using the findmac.exe will return the
same info every time (that i know of) beware thought that using the
native install will break the standard application update process so
you will have to write your own. My updates are processed the same way
as above. This is contents of the .bat file to get the mac list
#Echo off
SETLOCAL SET MAC = SET Media = Connected
FOR /F "Tokens=1-2 Delims=:" %%a in ('ipconfig /all^| FIND "Physical Address"') do #echo %%b ENDLOCAL
using this method makes it simple to implement at try before you by
method. at runtime if no activation code get try me version from
server instead of full version.
I want to add a parameter to a step that runs an operating system (CmdExec) in SQL Server Agent. I have searched everywhere and asked my coworkers and none of them had tried it before. I have attached a picture of the screen. I was thinking that I might be able to add the parameter (file path) after the .exe statement, but wasn't sure.
I thought the following might work:
Executable Path Parameter Path
C:\MyProgram\MyApp.exe E:\AppInfo\Client\Config.txt
This is on a production server and I didn't want to break anything if this isn't correct.
Thanks!
Yes You can use parameters, so your command would be:
C:\MyProgram\MyApp.exe E:\AppInfo\Client\Config.txt
If there is a space in the name don't forget to use quotes as specified in tip in screenshot:
"C:\My Program\MyApp.exe" "E:\App Info\Client\Config.txt"
Since You want to try it on production server, consider testing your configuration and software on test environment first. If You doubt that this will work, You can set job to execute only this single step to make sure it will work as expected.