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Print warnings if old daemon versions are used.

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* common/status.h (STATUS_WARNING): New.
* g10/call-agent.c (warn_version_mismatch): New.
(start_agent): Call warn function.
* g10/call-dirmngr.c: Include status.h.
(warn_version_mismatch): New.
(create_context): Call warn function.
* sm/call-agent.c (warn_version_mismatch): New.
(start_agent): Call warn function.
(gpgsm_agent_learn): Call warn function.
* sm/call-dirmngr.c (warn_version_mismatch): New.
(prepare_dirmngr): Call warn function.
--

We have seen too often bug reports which are due to still running old
versions of the daemons.  To catch this problematic use we now print
warning messages and also provide the warning via the status
interface.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-01-08 10:33:19 +01:00
parent 4d7ac43ff7
commit 2aa42baaf3
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
6 changed files with 164 additions and 7 deletions
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38
sm/call-dirmngr.c
View file

@ -149,6 +149,41 @@ get_membuf (struct membuf *mb, size_t *len)
}
/* Print a warning if the server's version number is less than our
version number. Returns an error code on a connection problem. */
static gpg_error_t
warn_version_mismatch (ctrl_t ctrl, assuan_context_t ctx,
const char *servername, int mode)
{
gpg_error_t err;
char *serverversion;
const char *myversion = strusage (13);
err = get_assuan_server_version (ctx, mode, &serverversion);
if (err)
log_error (_("error getting version from '%s': %s\n"),
servername, gpg_strerror (err));
else if (!compare_version_strings (serverversion, myversion))
{
char *warn;
warn = xtryasprintf (_("server '%s' is older than us (%s < %s)"),
servername, serverversion, myversion);
if (!warn)
err = gpg_error_from_syserror ();
else
{
log_info (_("WARNING: %s\n"), warn);
gpgsm_status2 (ctrl, STATUS_WARNING, "server_version_mismatch 0",
warn, NULL);
xfree (warn);
}
}
xfree (serverversion);
return err;
}
/* This function prepares the dirmngr for a new session. The
audit-events option is used so that other dirmngr clients won't get
disturbed by such events. */
@ -157,6 +192,9 @@ prepare_dirmngr (ctrl_t ctrl, assuan_context_t ctx, gpg_error_t err)
{
struct keyserver_spec *server;
if (!err)
err = warn_version_mismatch (ctrl, ctx, DIRMNGR_NAME, 0);
if (!err)
{
err = assuan_transact (ctx, "OPTION audit-events=1",