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gpg-agent: Add restricted connection feature.

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* agent/agent.h (opt): Add field extra_socket.
(server_control_s): Add field restricted.
* agent/command.c: Check restricted flag on many commands.
* agent/gpg-agent.c (oExtraSocket): New.
(opts): Add option --extra-socket.
(socket_name_extra): New.
(cleanup): Cleanup that socket name.
(main): Implement oExtraSocket.
(create_socket_name): Add arg homedir and change all callers.
(create_server_socket): Rename arg is_ssh to primary and change
callers.
(start_connection_thread): Take ctrl as arg.
(start_connection_thread_std): New.
(start_connection_thread_extra): New.
(handle_connections): Add arg listen_fd_extra and replace the
connection starting code by parameterized loop.
* common/asshelp.c (start_new_gpg_agent): Detect the use of the
restricted mode and don't fail on sending the pinentry environment.

* common/util.h (GPG_ERR_FORBIDDEN): New.
This commit is contained in:
Мирослав Николић 2014-11-27 20:41:37 +01:00 • committed by Werner Koch
parent ccee34736b
commit f173cdcdfb
6 changed files with 337 additions and 170 deletions
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20
common/asshelp.c
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@ -504,9 +504,23 @@ start_new_gpg_agent (assuan_context_t *r_ctx,
err = assuan_transact (ctx, "RESET",
NULL, NULL, NULL, NULL, NULL, NULL);
if (!err)
err = send_pinentry_environment (ctx, errsource,
opt_lc_ctype, opt_lc_messages,
session_env);
{
err = send_pinentry_environment (ctx, errsource,
opt_lc_ctype, opt_lc_messages,
session_env);
if (gpg_err_code (err) == GPG_ERR_FORBIDDEN
&& gpg_err_source (err) == GPG_ERR_SOURCE_GPGAGENT)
{
/* Check whether we are in restricted mode. */
if (!assuan_transact (ctx, "GETINFO restricted",
NULL, NULL, NULL, NULL, NULL, NULL))
{
if (verbose)
log_info (_("connection to agent is in restricted mode\n"));
err = 0;
}
}
}
if (err)
{
assuan_release (ctx);