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proxy: introduce call-id for clearing pacmanager configuration

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nm_pacrunner_manager_remove() required a "tag" argument. It was a
bug for callers trying to remove a configuration for a non-existing
tag.

That effectively means, the caller must keep track of whether a certain
"tag" is pending. The caller also must remember the tag -- a tag that he
must choose uniquely in the first place.

Turn that around and have nm_pacrunner_manager_send() return a (non
NULL) call-id. This call-id may later be used to remove the
configuration.

Apparently, previously the tracking of the "tag" was not always correct
and we hit the assertion in nm_pacrunner_manager_remove().

https://bugzilla.redhat.com/show_bug.cgi?id=1444374
This commit is contained in:
Thomas Haller
2017-04-21 15:46:56 +02:00
parent 7d1f725743
commit b04a9c90eb
4 changed files with 134 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
src/devices/nm-device.c
View File

@@ -323,7 +323,7 @@ typedef struct _NMDevicePrivate {
/* Proxy Configuration */
NMProxyConfig *proxy_config;
NMPacrunnerManager *pacrunner_manager;
bool proxy_config_sent;
NMPacrunnerCallId *pacrunner_call_id;
/* IP4 configuration info */
NMIP4Config * ip4_config; /* Combined config from VPN, settings, and device */
@@ -8880,25 +8880,34 @@ nm_device_reactivate_ip6_config (NMDevice *self,
}
static void
reactivate_proxy_config (NMDevice *self)
_pacrunner_manager_send (NMDevice *self)
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
if (!priv->proxy_config_sent)
return;
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
nm_pacrunner_manager_remove (priv->pacrunner_manager,
nm_device_get_ip_iface (self));
if (!priv->pacrunner_manager)
priv->pacrunner_manager = g_object_ref (nm_pacrunner_manager_get ());
nm_device_set_proxy_config (self, priv->dhcp4.pac_url);
nm_pacrunner_manager_send (priv->pacrunner_manager,
nm_device_get_ip_iface (self),
priv->pacrunner_call_id = nm_pacrunner_manager_send (priv->pacrunner_manager,
nm_device_get_ip_iface (self),
priv->proxy_config,
NULL,
NULL);
}
static void
reactivate_proxy_config (NMDevice *self)
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
if (!priv->pacrunner_call_id)
return;
nm_device_set_proxy_config (self, priv->dhcp4.pac_url);
_pacrunner_manager_send (self);
}
static gboolean
can_reapply_change (NMDevice *self, const char *setting_name,
NMSetting *s_old, NMSetting *s_new,
@@ -12565,11 +12574,8 @@ _set_state_full (NMDevice *self,
}
}
if (priv->proxy_config_sent) {
nm_pacrunner_manager_remove (priv->pacrunner_manager,
nm_device_get_ip_iface (self));
priv->proxy_config_sent = FALSE;
}
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
break;
case NM_DEVICE_STATE_DISCONNECTED:
if ( priv->queued_act_request
@@ -12594,15 +12600,8 @@ _set_state_full (NMDevice *self,
req,
NULL, NULL, NULL);
if (priv->proxy_config) {
nm_pacrunner_manager_send (priv->pacrunner_manager,
nm_device_get_ip_iface (self),
nm_device_get_ip_iface (self),
priv->proxy_config,
NULL,
NULL);
priv->proxy_config_sent = TRUE;
}
if (priv->proxy_config)
_pacrunner_manager_send (self);
break;
case NM_DEVICE_STATE_FAILED:
/* Usually upon failure the activation chain is interrupted in
@@ -13608,8 +13607,6 @@ nm_device_init (NMDevice *self)
priv->ip6_saved_properties = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
priv->sys_iface_state = NM_DEVICE_SYS_IFACE_STATE_EXTERNAL;
priv->pacrunner_manager = g_object_ref (nm_pacrunner_manager_get ());
priv->default_route.v4_is_assumed = TRUE;
priv->default_route.v6_is_assumed = TRUE;
@@ -13734,6 +13731,8 @@ dispose (GObject *object)
dispatcher_cleanup (self);
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
g_clear_object (&priv->pacrunner_manager);
_cleanup_generic_pre (self, CLEANUP_TYPE_KEEP);

85
src/nm-pacrunner-manager.c
View File

@@ -36,14 +36,15 @@ static void pacrunner_remove_done (GDBusProxy *proxy, GAsyncResult *res, gpointe
/*****************************************************************************/
typedef struct {
char *tag;
struct _NMPacrunnerCallId {
NMPacrunnerManager *manager;
GVariant *args;
char *path;
guint refcount;
bool removed;
} Config;
};
typedef struct _NMPacrunnerCallId Config;
typedef struct {
char *iface;
@@ -77,13 +78,12 @@ NM_DEFINE_SINGLETON_GETTER (NMPacrunnerManager, nm_pacrunner_manager_get, NM_TYP
/*****************************************************************************/
static Config *
config_new (NMPacrunnerManager *manager, char *tag, GVariant *args)
config_new (NMPacrunnerManager *manager, GVariant *args)
{
Config *config;
config = g_slice_new0 (Config);
config->manager = manager;
config->tag = tag;
config->args = g_variant_ref_sink (args);
config->refcount = 1;
@@ -106,7 +106,6 @@ config_unref (Config *config)
g_assert (config->refcount > 0);
if (config->refcount == 1) {
g_free (config->tag);
g_variant_unref (config->args);
g_free (config->path);
g_slice_free (Config, config);
@@ -233,12 +232,12 @@ pacrunner_send_done (GDBusProxy *proxy, GAsyncResult *res, gpointer user_data)
priv = NM_PACRUNNER_MANAGER_GET_PRIVATE (self);
if (!variant) {
_LOGD ("send config for '%s' failed: %s", config->tag, error->message);
_LOGD ("send config for '%p' failed: %s", config, error->message);
} else {
g_variant_get (variant, "(&o)", &path);
config->path = g_strdup (path);
_LOGD ("successfully sent config for '%s'", config->tag);
_LOGD ("successfully sent config for '%p'", config);
if (config->removed) {
g_dbus_proxy_call (priv->pacrunner,
@@ -262,7 +261,7 @@ pacrunner_send_config (NMPacrunnerManager *self, Config *config)
if (priv->pacrunner) {
gs_free char *args_str = NULL;
_LOGT ("sending proxy config for '%s': %s", config->tag,
_LOGT ("sending proxy config for '%p': %s", config,
(args_str = g_variant_print (config->args, FALSE)));
config_ref (config);
@@ -328,15 +327,21 @@ pacrunner_proxy_cb (GObject *source, GAsyncResult *res, gpointer user_data)
* nm_pacrunner_manager_send:
* @self: the #NMPacrunnerManager
* @iface: the iface for the connection or %NULL
* @tag: unique configuration identifier
* @proxy_config: proxy config of the connection
* @ip4_config: IP4 config of the connection to extract domain info from
* @ip6_config: IP6 config of the connection to extract domain info from
*
* Returns: a #NMPacrunnerCallId call id. The function cannot
* fail and always returns a non NULL pointer. The call-id may
* be used to remove the configuration later via nm_pacrunner_manager_remove().
* Note that the call-id does not keep the @self instance alive.
* If you plan to remove the configuration later, you must keep
* the instance alive long enough. You can remove the configuration
* at most once using this call call-id.
*/
void
NMPacrunnerCallId *
nm_pacrunner_manager_send (NMPacrunnerManager *self,
const char *iface,
const char *tag,
NMProxyConfig *proxy_config,
NMIP4Config *ip4_config,
NMIP6Config *ip6_config)
@@ -348,8 +353,8 @@ nm_pacrunner_manager_send (NMPacrunnerManager *self,
GPtrArray *domains;
Config *config;
g_return_if_fail (NM_IS_PACRUNNER_MANAGER (self));
g_return_if_fail (proxy_config);
g_return_val_if_fail (NM_IS_PACRUNNER_MANAGER (self), NULL);
g_return_val_if_fail (proxy_config, NULL);
priv = NM_PACRUNNER_MANAGER_GET_PRIVATE (self);
@@ -401,8 +406,7 @@ nm_pacrunner_manager_send (NMPacrunnerManager *self,
}
}
config = config_new (self, g_strdup (tag),
g_variant_new ("(a{sv})", &proxy_data));
config = config_new (self, g_variant_new ("(a{sv})", &proxy_data));
priv->configs = g_list_append (priv->configs, config);
/* Send if pacrunner is available on bus, otherwise
@@ -410,6 +414,8 @@ nm_pacrunner_manager_send (NMPacrunnerManager *self,
* sent when pacrunner appears.
*/
pacrunner_send_config (self, config);
return config;
}
static void
@@ -429,9 +435,9 @@ pacrunner_remove_done (GDBusProxy *proxy, GAsyncResult *res, gpointer user_data)
self = NM_PACRUNNER_MANAGER (config->manager);
if (!ret)
_LOGD ("couldn't remove config for '%s': %s", config->tag, error->message);
_LOGD ("couldn't remove config for '%p': %s", config, error->message);
else
_LOGD ("successfully removed config for '%s'", config->tag);
_LOGD ("successfully removed config for '%p'", config);
config_unref (config);
}
@@ -439,23 +445,27 @@ pacrunner_remove_done (GDBusProxy *proxy, GAsyncResult *res, gpointer user_data)
/**
* nm_pacrunner_manager_remove:
* @self: the #NMPacrunnerManager
* @iface: the iface for the connection to be removed
* from pacrunner
* @call_id: the call-id obtained from nm_pacrunner_manager_send()
*/
void
nm_pacrunner_manager_remove (NMPacrunnerManager *self, const char *tag)
nm_pacrunner_manager_remove (NMPacrunnerManager *self, NMPacrunnerCallId *call_id)
{
NMPacrunnerManagerPrivate *priv = NM_PACRUNNER_MANAGER_GET_PRIVATE (self);
NMPacrunnerManagerPrivate *priv;
Config *config;
GList *list;
g_return_if_fail (tag);
g_return_if_fail (NM_IS_PACRUNNER_MANAGER (self));
g_return_if_fail (call_id);
_LOGT ("removing config for '%s'", tag);
config = call_id;
priv = NM_PACRUNNER_MANAGER_GET_PRIVATE (self);
for (list = g_list_first (priv->configs); list; list = g_list_next (list)) {
Config *config = list->data;
_LOGT ("removing config for '%p'", config);
list = g_list_find (priv->configs, config);
if (!list)
g_return_if_reached ();
if (nm_streq (config->tag, tag)) {
if (priv->pacrunner) {
if (!config->path) {
/* send() failed or is still pending. Mark the item as
@@ -477,11 +487,22 @@ nm_pacrunner_manager_remove (NMPacrunnerManager *self, const char *tag)
} else
config_unref (config);
priv->configs = g_list_delete_link (priv->configs, list);
return;
}
}
/* bug, remove() should always match a previous send() for a given tag */
g_return_if_reached ();
}
gboolean
nm_pacrunner_manager_remove_clear (NMPacrunnerManager *self,
NMPacrunnerCallId **p_call_id)
{
g_return_val_if_fail (p_call_id, FALSE);
/* if we have no call-id, allow for %NULL */
g_return_val_if_fail ((!self && !*p_call_id) || NM_IS_PACRUNNER_MANAGER (self), FALSE);
if (!*p_call_id)
return FALSE;
nm_pacrunner_manager_remove (self,
g_steal_pointer (p_call_id));
return TRUE;
}
/*****************************************************************************/

14
src/nm-pacrunner-manager.h
View File

@@ -15,7 +15,8 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (C) Copyright 2016 Atul Anand <atulhjp@gmail.com>.
* Copyright 2016 Atul Anand <atulhjp@gmail.com>.
* Copyright 2016 - 2017 Red Hat, Inc.
*/
#ifndef __NETWORKMANAGER_PACRUNNER_MANAGER_H__
@@ -30,17 +31,22 @@
typedef struct _NMPacrunnerManagerClass NMPacrunnerManagerClass;
typedef struct _NMPacrunnerCallId NMPacrunnerCallId;
GType nm_pacrunner_manager_get_type (void);
NMPacrunnerManager *nm_pacrunner_manager_get (void);
void nm_pacrunner_manager_send (NMPacrunnerManager *self,
NMPacrunnerCallId *nm_pacrunner_manager_send (NMPacrunnerManager *self,
const char *iface,
const char *tag,
NMProxyConfig *proxy_config,
NMIP4Config *ip4_config,
NMIP6Config *ip6_config);
void nm_pacrunner_manager_remove (NMPacrunnerManager *self, const char *tag);
void nm_pacrunner_manager_remove (NMPacrunnerManager *self,
NMPacrunnerCallId *call_id);
gboolean nm_pacrunner_manager_remove_clear (NMPacrunnerManager *self,
NMPacrunnerCallId **p_call_id);
#endif /* __NETWORKMANAGER_PACRUNNER_MANAGER_H__ */

25
src/vpn/nm-vpn-connection.c
View File

@@ -128,7 +128,8 @@ typedef struct {
GVariant *connect_hash;
guint connect_timeout;
NMProxyConfig *proxy_config;
gboolean proxy_config_sent;
NMPacrunnerManager *pacrunner_manager;
NMPacrunnerCallId *pacrunner_call_id;
gboolean has_ip4;
NMIP4Config *ip4_config;
guint32 ip4_internal_gw;
@@ -559,13 +560,18 @@ _set_vpn_state (NMVpnConnection *self,
NULL);
if (priv->proxy_config) {
nm_pacrunner_manager_send (nm_pacrunner_manager_get (),
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
if (!priv->pacrunner_manager) {
/* the pending call doesn't keep NMPacrunnerManager alive.
* Take a reference to it. */
priv->pacrunner_manager = g_object_ref (nm_pacrunner_manager_get ());
}
priv->pacrunner_call_id = nm_pacrunner_manager_send (priv->pacrunner_manager,
priv->ip_iface,
nm_connection_get_uuid (applied),
priv->proxy_config,
priv->ip4_config,
priv->ip6_config);
priv->proxy_config_sent = TRUE;
}
break;
case STATE_DEACTIVATING:
@@ -596,11 +602,8 @@ _set_vpn_state (NMVpnConnection *self,
}
}
if (priv->proxy_config_sent) {
nm_pacrunner_manager_remove (nm_pacrunner_manager_get(),
nm_connection_get_uuid (applied));
priv->proxy_config_sent = FALSE;
}
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
break;
case STATE_FAILED:
case STATE_DISCONNECTED:
@@ -2649,6 +2652,10 @@ dispose (GObject *object)
fw_call_cleanup (self);
nm_pacrunner_manager_remove_clear (priv->pacrunner_manager,
&priv->pacrunner_call_id);
g_clear_object (&priv->pacrunner_manager);
G_OBJECT_CLASS (nm_vpn_connection_parent_class)->dispose (object);
}