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settings: fix check on existing system secrets

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The previous check was based only on the presence of a non-NULL
"existing_secrets" GVariant. That GVariant is created via:

  nm_connection_to_dbus(nm_settings_connection_get_connection(self),
                        NM_CONNECTION_SERIALIZE_WITH_SECRETS_SYSTEM_OWNED)

The function returns a GVariant containing a first-level dictionary
for each setting, even for those that doesn't contain any secrets. As
a result, the check was requiring the system.modify permission even if
there weren't any cached secrets to send to the agent.

Fix the check to actually check for the presence of any secrets in the
cached dictionary.
This commit is contained in:
Beniamino Galvani 2026-02-23 17:23:23 +01:00
parent db0825a110
commit 610fbe612b
1 changed files with 34 additions and 1 deletions
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35
src/core/settings/nm-agent-manager.c
View file

@ -1083,6 +1083,39 @@ _con_get_request_start_validated(NMAuthChain *chain,
_con_get_request_start_proceed(req, req->con.current_has_modify);
}
static gboolean
_req_has_existing_secrets(Request *req)
{
GVariantIter iter;
const char *setting_name;
GVariant *setting_dict;
gboolean has;
if (!req->con.get.existing_secrets)
return FALSE;
nm_assert(g_variant_is_of_type(req->con.get.existing_secrets, NM_VARIANT_TYPE_CONNECTION));
g_variant_iter_init(&iter, req->con.get.existing_secrets);
while (g_variant_iter_next(&iter, "{&s@a{sv}}", &setting_name, &setting_dict)) {
GVariantIter setting_iter;
GVariant *val;
g_variant_iter_init(&setting_iter, setting_dict);
while (g_variant_iter_next(&setting_iter, "{&sv}", NULL, &val)) {
has = !g_variant_is_container(val) || g_variant_n_children(val) > 0;
g_variant_unref(val);
if (has) {
g_variant_unref(setting_dict);
return TRUE;
}
}
g_variant_unref(setting_dict);
}
return FALSE;
}
static void
_con_get_request_start(Request *req)
{
@ -1103,7 +1136,7 @@ _con_get_request_start(Request *req)
* unprivileged users.
*/
if ((req->con.get.flags != NM_SECRET_AGENT_GET_SECRETS_FLAG_NONE)
&& (req->con.get.existing_secrets
&& (_req_has_existing_secrets(req)
|| _nm_connection_aggregate(req->con.connection,
NM_CONNECTION_AGGREGATE_ANY_SYSTEM_SECRET_FLAGS,
NULL))) {