[sword-devel] SFTP Support

[Andrew Thule]

Is there a URL that oultines what this patch does?  I agree this is going
to be very useful change, but confess - I don't yet understand what this
patch is doing .

(Also, thanks indeed Greg for your efforts)

~A


On Sun, Jan 6, 2013 at 2:29 PM, Troy A. Griffitts <scribe at crosswire.org>wrote:

>  Applied.  Thanks Greg, for the original contribution and for taking the
> time to work through the details.
>
>
> On 12/31/2012 03:53 PM, Greg Hellings wrote:
>
> Here is the updated patch adding CURLSFTPAVAILABLE support to CMake as
> well as to the library code. It defaults to assuming no SFTP support
> if either the curl-config executable cannot be found or if it returns
> a value other than "1" from the quick detection process we have
> settled on.
>
> Users of Windows builds through either VisualStudio or Borland will
> need to figure out if curl-config is available on their systems and,
> if not, come up with another way to detect and support SFTP for
> clients using those builds. On Linux it is a Bash script, so it might
> be adaptable to Manfred's XCode system in some way also.
>
> For those in the JSword world, I am sure there are SFTP Java clients
> available which could be leveraged if they wanted to add support for
> the same functionality to JSword applications.
>
> --Greg
>
> On Sun, Dec 30, 2012 at 9:11 PM, Troy A. Griffitts <scribe at crosswire.org> <scribe at crosswire.org> wrote:
>
>  OK Greg,
>
> I've hacked detection of CURL SFTP into the autotools build (hopefully-- it
> works for me).
>
> I've added a new compile time define with -DCURLSFTPAVAILABLE to go along
> with the existing -DCURLAVAILABLE
>
> If you'd like to update the sftp patch to conditionally compile support in
> based on this define, that would be cool.  I'll do it myself soon if you
> don't have time.
>
> Troy
>
>
>
> On 12/28/2012 11:42 AM, Greg Hellings wrote:
>
>  Further digging with help from our friends has revealed this nugget:
>
> $ curl-config --protocols
>
> produces a newline-delimited list of protocols that the particular
> build of libcurl supports. curl-config is a shell script which can be
> run on the build system and should satisfy both the requirements of
> native builds and cross-compiling support. We could use this to set a
> compiler macro indicating support (or not) for SFTP in the target
> libcurl library.
>
> If someone wants to tackle that in the autotools world, I can add
> detection to CMake as well. A simple command such as
> $ curl-config --protocols | grep SFTP | wc -l
> 1
>
> in Fedora will result in a value of 1 or greater if SFTP is supported
> while it should produce 0 if SFTP support is left out. An Ubuntu
> system produce this output:
> $ curl-config --protocols | grep SFTP | wc -l
> 0
>
> And it even works for cross-compiling:
> $ /usr/i686-w64-mingw32/sys-root/mingw/bin/curl-config --protocols |
> grep SFTP | wc -l
> 1
>
>
> This appears to be our best way forward if we want to enable
> compile-time enabling or disabling of this option.
>
> --Greg
>
> On Mon, Dec 24, 2012 at 8:43 AM, Greg Hellings <greg.hellings at gmail.com> <greg.hellings at gmail.com>
> wrote:
>
>  Troy,
>
> On Sun, Dec 23, 2012 at 10:39 PM, Troy A. Griffitts<scribe at crosswire.org> <scribe at crosswire.org> wrote:
>
>  Dear Greg,
>
> Looking to apply this SFTP patch, could you give me some background as
> to
> why the check to ignore across all transports for '.' and '..'?
>
>  Our downloading method runs recursively from the given directory until
> it runs out of directory depth. FTP servers don't usually seem to
> return . and .. as valid paths, and the HTTP(S) transport attempts to
> parse the returned HTML page to avoid the link to the parent
> directory. But whatever options are passed by cURL to the SFTP
> transport resulted in it returning . and .. as paths within the
> current directory. Because '.' came first in the list, the installmgr
> was running through an infinite loop whenever it tried to pull data
> from the server.
>
> I added it at the level of all transports because we don't want to
> either loop infinitely on '.' or accidentally pull a whole server
> recursively by following '..' to the root of the server. It might be a
> server config option that permits it, but I wanted to avoid the
> possibility of the InlstallMgr class getting choked up on it.
>
> --Greg
>
>
>  Thanks,
>
> Troy
>
>
>
>
> On 12/03/2012 04:06 PM, Greg Hellings wrote:
>
> The attached patch will introduce support for SFTPSource transports in
> the SWORD engine, allowing a user to access remote repositories over
> SFTP (which is enabled by default when a user enables SSH).
>
> --Greg
>
>
>
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