shared/compat: Fix memory handling of nm_setting_vpn_get_*_keys (v2)
The compat implementations return a (transfer none) strv instead of a
(transfer container) one. This has caused double frees in nm-applet:
https://bugs.archlinux.org/task/56772
We still need to copy the keys because nm_setting_vpn_foreach_* provides
us with copies that are freed after the iteration.
Fix this by handing out a duplicate of the array.
Fixes: 272439cb20
https://mail.gnome.org/archives/networkmanager-list/2017-December/msg00070.html
This commit is contained in:

committed by
Thomas Haller

parent
64fcfc62bb
commit
76207194d1
@@ -44,25 +44,32 @@ _get_keys (NMSettingVpn *setting,
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nm_assert (NM_IS_SETTING_VPN (setting));
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nm_assert (NM_IS_SETTING_VPN (setting));
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a = g_ptr_array_new ();
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if (is_secrets)
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len = nm_setting_vpn_get_num_secrets (setting);
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else
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len = nm_setting_vpn_get_num_data_items (setting);
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a = g_ptr_array_new_full (len + 1, (GDestroyNotify) g_free);
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if (is_secrets)
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if (is_secrets)
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nm_setting_vpn_foreach_secret (setting, _get_keys_cb, a);
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nm_setting_vpn_foreach_secret (setting, _get_keys_cb, a);
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else
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else
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nm_setting_vpn_foreach_data_item (setting, _get_keys_cb, a);
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nm_setting_vpn_foreach_data_item (setting, _get_keys_cb, a);
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len = a->len;
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len = a->len;
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if (a->len) {
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if (len) {
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g_ptr_array_sort (a, nm_strcmp_p);
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g_ptr_array_sort (a, nm_strcmp_p);
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g_ptr_array_add (a, NULL);
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g_ptr_array_add (a, NULL);
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keys = (const char **) g_ptr_array_free (g_steal_pointer (&a), FALSE);
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keys = g_memdup (a->pdata, a->len * sizeof *keys);
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/* we need to cache the keys *somewhere*. */
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/* we need to cache the keys *somewhere*. */
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g_object_set_qdata_full (G_OBJECT (setting),
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g_object_set_qdata_full (G_OBJECT (setting),
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is_secrets
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is_secrets
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? NM_CACHED_QUARK ("libnm._nm_setting_vpn_get_secret_keys")
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? NM_CACHED_QUARK ("libnm._nm_setting_vpn_get_secret_keys")
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: NM_CACHED_QUARK ("libnm._nm_setting_vpn_get_data_keys"),
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: NM_CACHED_QUARK ("libnm._nm_setting_vpn_get_data_keys"),
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keys,
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g_ptr_array_ref (a),
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(GDestroyNotify) g_strfreev);
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(GDestroyNotify) g_ptr_array_unref);
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}
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}
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NM_SET_OUT (out_length, len);
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NM_SET_OUT (out_length, len);
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