threads / discuss / 56348

Get tree of remote repository using custom ssh library.

Subject: Get tree of remote repository using custom ssh library.

## tl;dr

4 messages between Aug 22, 2021 and Aug 25, 2021.

replies: 3people: 2as markdown or json

Stef Bon· Aug 22, 2021, 18:47 UTC · lore
Hi,

I want to add git support to my fuse workspace, enable browsing of the users repositories. I've got a custom ssh library:

struct ssh_channel_s *channel=create_channel(session, _CHANNEL_TYPE_SESSION); if (channel==NULL) return -1; set_channel_exec(channel, command);

if (add_channel(channel, CHANNEL_FLAG_OPEN)==-1) goto free;
if (send_channel_start_command_message(channel, 1, &seq)>0) {
     struct ssh_payload_s *payload=NULL;
      payload=get_ssh_payload_channel(channel, &expire, &seq, &error);
      if (payload && payload->type==SSH_MSG_CHANNEL_DATA) {
.... process the received data
      }
      free_payload(&payload);
}
Now I read:

https://git-scm.com/book/en/v2/Git-Internals-Transfer-Protocols and https://www.git-scm.com/docs/protocol-v2

How can I get remote repositories of a user on a server (say github.com, user stefbon) and browse each HEAD repository and the source tree?

Stef Bon
Kevin Daudt· Aug 25, 2021, 05:45 UTC · re: Stef Bon · lore

Re: Get tree of remote repository using custom ssh library.

On Sun, Aug 22, 2021 at 08:47:18PM +0200, Stef Bon wrote:
Show 35 quoted lines
> Hi,
> 
> I want to add git support to my fuse workspace, enable browsing of the
> users repositories.
> I've got a custom ssh library:
> 
> struct ssh_channel_s *channel=create_channel(session, _CHANNEL_TYPE_SESSION);
> if (channel==NULL) return -1;
> set_channel_exec(channel, command);
> 
> if (add_channel(channel, CHANNEL_FLAG_OPEN)==-1) goto free;
> 
> if (send_channel_start_command_message(channel, 1, &seq)>0) {
>      struct ssh_payload_s *payload=NULL;
> 
>       payload=get_ssh_payload_channel(channel, &expire, &seq, &error);
> 
>       if (payload && payload->type==SSH_MSG_CHANNEL_DATA) {
> 
> .... process the received data
>       }
>       free_payload(&payload);
> }
> 
> Now I read:
> 
> https://git-scm.com/book/en/v2/Git-Internals-Transfer-Protocols
> and
> https://www.git-scm.com/docs/protocol-v2
> 
> How can I get remote repositories of a user on a server (say
> github.com, user stefbon) and browse each HEAD repository and the
> source tree?
> 
> Stef Bon
Hello Stef,

Git has no way of knowing what repositories might exist on a given server. They might live everywhere, and git does not keep track of what repositories are created on a central location, so there is not central directory to query.

Besides that, services like github do not let you remotely browse repositories over SSH, they only allow you to run git-upload-pack / git-receive-pack or equivalent to handle the git protocol.

The only way to programatically explore what is available remotely is to use an API that exposes this information (most public git forges provide one).

Hope this helps, Kevin
Stef Bon· Aug 25, 2021, 06:54 UTC · re: Kevin Daudt · lore

Re: Get tree of remote repository using custom ssh library.

Op wo 25 aug. 2021 om 07:45 schreef Kevin Daudt <me@ikke.info>:
>
Hello Kevin,
Show 9 quoted lines
> >
>
> Hello Stef,
>
> Git has no way of knowing what repositories might exist on a
> given server. They might live everywhere, and git does not keep track of
> what repositories are created on a central location, so there is not
> central directory to query.
>
Ok.
> Besides that, services like github do not let you remotely browse
> repositories over SSH, they only allow you to run git-upload-pack /
> git-receive-pack or equivalent to handle the git protocol.
>

That is exactly what I want. I know git works with the git-upload-pack and git-receive-pack methods. I think I had to be more precisely. Now my issue is how do I have to call these, with what parameters to achieve the listing of entries? (git_tree and git_tree_entry for example?? I do not know)

Stef

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