What does it mean that a function, in particular CryptExportPKCS8 is deprecated?
https://msdn.microsoft.com/en-us/library/windows/desktop/aa379932(v=vs.85).aspx
I'm aware that one can't use it with newer version of wincrypt just because it is not present in header file, but can a program based on old wincrypt.h and crypt32.lib still retrieve private key from certificate store in Windows 10? Or is it impossible to access such data without using more up-to-date API?
Deprecated means "going away, change your code". In this case, it appears that MS wants you to use PFXExportCertStoreEx() instead.
Related
My question should be very simple to answer for anyone not being a self-taught newbie like me...
On this page is a cheatsheet concerning a function to be used in GIS/DB environnement : http://www.bostongis.com/pgsql2shp_shp2pgsql_quickguide.bqg
I would like to create a script allowing users to just have to click on it to launch the process, given the proper datas. But I don't understand how to use this. It obviously doesn't work in a Python console, nor directly in the windows console. How is it supposed to work ? What language is this ?
Thanks
shp2pgsql is indeed a command line tool. It comes with your PostgreSQL/PostGIS installation (usually) and, if not accessible via PATH-variable, can (usually) be run from within the /bin-folder in your PostgreSQL-Installation. You can also always 'make' the programm from source in any location yourself, if needed.
EDIT:
One way to set up a script (independent of whether you use it within qgis own python environment or not) would be to use Pythons subprocess (or os.system) module (check related question here) to write to shell and execute shp2pgsql.
A slightly more sophisitcated solution to (batch) insert (multiple) shapefiles via script could be to implement ogr2ogr via gdal/ogr module within python (check this blog). That, however, would require a working installation of the gdal core library, and the respective Python bindings (at least to use outside of QGIS Python environment, where it is pre-installed AFAIK), which can be tiresome at times. Once installed correctly, it offers a powerful (I dare say almighty) toolset for geodata management and manipulation via Python, though.
Apart from that, the blog link I provided also states the implementation of a batch insert script/tool (which operates ogr2ogr) in qgis 2.8 toolbox...maybe that can help you, either with your work directly or (via sourcecode) to point you in the direction of creating your own tool.
I am trying to load libreadline.so. My code works fine if I give the version number explicitly as in "libreadline.so.6" but fails if I just give "libreadline.so", presumably its just trying to open the file name I give directly. To avoid a future failure when a new version appears, I call dlopen in a loop with the version number counting down to zero. This works and always picks up the latest version of libreadline.
My question is, is there a correct, or better, way of doing this?
I see libreadline.so.6 is a link to libreadline.so.6.3, its a pity they cant have a link from libreadline.so to the latest version.
What about opening the directory which contains all the different files and then comparing the extensions of all files?
I built up a module that creates a window with an edit box from windows' EDIT windowclass. It is designed to only work with ansi character set and not using any unicode.
I make use of EM_GETHANDLE to recieve the buffer to the edit control.
Now here is my problem: (quoted from link above)
Note For Comctl32.dll version 6, the buffer always contains an array of WCHARs, regardless of whether an ANSI or Unicode function created the edit control. For more information on DLL versions, see Common Control Versions.
So when my module gets loaded by an application that has comctl32 initialized, my whole code breaks.
My Question: Is there a way to prevent CreateWindowA to use comclt32 or does anyone have an idea to fix this problem?
The application uses COMCTL32.DLL if it is specified in the app's manifest as described e.g. here: http://msdn.microsoft.com/en-us/library/windows/desktop/bb773175%28v=vs.85%29.aspx
If your module is DLL, then you might try use some isolation technique so it does not rely on what version of COMCTL32.DLL the .exe decided to use, but that might bring many other drawbacks.
I recommend to use WM_GETTEXTA or GetWindowTextA() instead, which will copy converted string into your buffer. Designing a module which requires old version of a DLL to work correctly is simply bad idea.
We have an existing C library (DLL / .so) that processes some data. There's a call to initialise it, then a call to give it the parameters it needs to process, and then a few calls to retrieve the different output parameters you are interested in. The initialise is then called to reset the library for the next session. We have an app built around this to easily input the data and view the results.
Now we want to take this library and make it available as a web service. We are looking for the simplest (read quickest) way to do this. As I see it, we need:
A web services framework (Apache Axis2/C looks good for existing C code)
Some way to start a process for each incoming query (not sure if Axis2 can do something like this).
So my question is : Is Axis2/C the simplest way, or is there another simple solution?
If you have an external executable you can call, how about using something like Apache with FastCGI?
I am currently using libproxy to get the proxy information (if any) on RedHat and Debian Linux. It doesn't work all that well, but it's the only way I know I can use to get the proxy information from my code.
I need to stop using the lib since in most cases it doesn't recognize the proxy.
Is there any way to acquire the proxy information? What i mean is, is there a file (or group of files) i can read, or an env variable or an API or system call that i can use to get the information?
Gnome based code is OK, KDE might help as well but i am looking for something more generic.
The code is C.
Now, before anyone asks, I don't want to use libproxy anymore. Period. I don't want to start investigating why it doesn't work. I don't really want to know whether there is a new version of that lib. I know it might work, I just don't want to use it. i can't use it (just because). So please don't point me that way.
Code is appreciated.
thanks.
In linux, the "global proxy setting" is typically just environment variables that are usually set in /etc/profile. You can examine those variables to see what proxy is set.
The variables are:
http_proxy - the proxy for HTTP connections
ftp_proxy - the proxy for FTP connections
Using the Network Proxy Preferences tool under Gnome saves information in the GConf database. The path to the keys are /system/http_proxy and /system/proxy. You can read about the detail in those trees at this page.
You can access the GConf database using the library API. Note that GConf is based on GObject. To examine the contents of this tree using the command line, try the following:
gconftool-2 -R /system/http_proxy
This will provide a "name = value" listing of the tree, which may be usable in your application. Note that this requires a system() call, so it's not recommended for a deployed application, but it might help you get started.
GNOME has its own place to store the Proxy settings, and I am sure KDE or any other DE has its own place too. May be you can look for any mention of where Proxy settings should be store in the Linux Standard Base. That could hint you a standard of doing it irrespective of Distro or DE.
DE -> Desktop Environment
char* proxy = getenv("all_proxy");
This statement puts the value of the environment variable called all_proxy, which is used by the system as a global proxy, in your C variable.
To print it in bash, try env | grep 'all_proxy' | cut -d= -f 2.