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P2P: More complete persistent group management over D-Bus

Browse source 
Extend commit c2762e410f to allow
applications to manage (add/remove) persistent groups and accepted
network object paths while invoking a persistent group.
This commit is contained in:
Jayant Sane 2011-06-24 11:20:19 +03:00 committed by Jouni Malinen
parent 5d5fe8ed08
commit 2855070673
9 changed files with 332 additions and 33 deletions
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31
wpa_supplicant/dbus/dbus_new.c
View file

@ -1374,7 +1374,7 @@ static void wpas_dbus_signal_persistent_group_removed(
struct wpa_supplicant *wpa_s, int id)
{
wpas_dbus_signal_persistent_group(wpa_s, id, "PersistentGroupRemoved",
TRUE);
FALSE);
}
#endif /*CONFIG_P2P*/
@ -2247,6 +2247,28 @@ static const struct wpa_dbus_method_desc wpas_dbus_interface_methods[] = {
END_ARGS
}
},
{ "AddPersistentGroup", WPAS_DBUS_NEW_IFACE_P2PDEVICE,
(WPADBusMethodHandler) wpas_dbus_handler_add_persistent_group,
{
{ "args", "a{sv}", ARG_IN },
{ "path", "o", ARG_OUT },
END_ARGS
}
},
{ "RemovePersistentGroup", WPAS_DBUS_NEW_IFACE_P2PDEVICE,
(WPADBusMethodHandler) wpas_dbus_handler_remove_persistent_group,
{
{ "path", "o", ARG_IN },
END_ARGS
}
},
{ "RemoveAllPersistentGroups", WPAS_DBUS_NEW_IFACE_P2PDEVICE,
(WPADBusMethodHandler)
wpas_dbus_handler_remove_all_persistent_groups,
{
END_ARGS
}
},
#endif /* CONFIG_P2P */
{ "FlushBSS", WPAS_DBUS_NEW_IFACE_INTERFACE,
(WPADBusMethodHandler) &wpas_dbus_handler_flush_bss,
@ -2356,7 +2378,7 @@ static const struct wpa_dbus_property_desc wpas_dbus_interface_properties[] = {
(WPADBusPropertyAccessor) wpas_dbus_getter_p2p_peergo,
NULL, R
},
{ "PersistentGroups", WPAS_DBUS_NEW_IFACE_INTERFACE, "ao",
{ "PersistentGroups", WPAS_DBUS_NEW_IFACE_P2PDEVICE, "ao",
(WPADBusPropertyAccessor) wpas_dbus_getter_persistent_groups,
NULL, R
},
@ -3083,8 +3105,9 @@ static const struct wpa_dbus_property_desc
{ "Properties", WPAS_DBUS_NEW_IFACE_PERSISTENT_GROUP, "a{sv}",
(WPADBusPropertyAccessor)
wpas_dbus_getter_persistent_group_properties,
NULL,
R
(WPADBusPropertyAccessor)
wpas_dbus_setter_persistent_group_properties,
RW
},
{ NULL, NULL, NULL, NULL, NULL, 0 }
};

6
wpa_supplicant/dbus/dbus_new_handlers.c
View file

@ -172,7 +172,7 @@ static struct wpa_supplicant * get_iface_by_dbus_path(
*
* Sets network configuration with parameters given id DBus dictionary
*/
static DBusMessage * set_network_properties(DBusMessage *message,
DBusMessage * set_network_properties(DBusMessage *message,
struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
DBusMessageIter *iter)
@ -1365,7 +1365,7 @@ DBusMessage * wpas_dbus_handler_remove_network(DBusMessage *message,
/* Extract the network ID and ensure the network */
/* is actually a child of this interface */
iface = wpas_dbus_new_decompose_object_path(op, &net_id, NULL);
iface = wpas_dbus_new_decompose_object_path(op, 0, &net_id, NULL);
if (iface == NULL || os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply = wpas_dbus_error_invalid_args(message, op);
goto out;
@ -1464,7 +1464,7 @@ DBusMessage * wpas_dbus_handler_select_network(DBusMessage *message,
/* Extract the network ID and ensure the network */
/* is actually a child of this interface */
iface = wpas_dbus_new_decompose_object_path(op, &net_id, NULL);
iface = wpas_dbus_new_decompose_object_path(op, 0, &net_id, NULL);
if (iface == NULL || os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply = wpas_dbus_error_invalid_args(message, op);
goto out;

5
wpa_supplicant/dbus/dbus_new_handlers.h
View file

@ -77,6 +77,11 @@ DBusMessage * wpas_dbus_handler_scan(DBusMessage *message,
DBusMessage * wpas_dbus_handler_disconnect(DBusMessage *message,
struct wpa_supplicant *wpa_s);
DBusMessage * set_network_properties(DBusMessage *message,
struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
DBusMessageIter *iter);
DBusMessage * wpas_dbus_handler_add_network(DBusMessage *message,
struct wpa_supplicant *wpa_s);

282
wpa_supplicant/dbus/dbus_new_handlers_p2p.c
View file

@ -18,6 +18,7 @@
#include "../config.h"
#include "../wpa_supplicant_i.h"
#include "../wps_supplicant.h"
#include "../notify.h"
#include "dbus_new_helpers.h"
#include "dbus_new.h"
#include "dbus_new_handlers.h"
@ -51,6 +52,24 @@ static int parse_peer_object_path(char *peer_path, u8 addr[ETH_ALEN])
return hwaddr_compact_aton(p, addr);
}
/**
* wpas_dbus_error_persistent_group_unknown - Return a new PersistentGroupUnknown
* error message
* @message: Pointer to incoming dbus message this error refers to
* Returns: a dbus error message
*
* Convenience function to create and return an invalid persistent group error.
*/
static DBusMessage * wpas_dbus_error_persistent_group_unknown(
DBusMessage *message)
{
return dbus_message_new_error(message, WPAS_DBUS_ERROR_NETWORK_UNKNOWN,
"There is no such persistent group in "
"this P2P device.");
}
DBusMessage *wpas_dbus_handler_p2p_find(DBusMessage * message,
struct wpa_supplicant * wpa_s)
{
@ -254,7 +273,7 @@ DBusMessage *wpas_dbus_handler_p2p_group_add(DBusMessage * message,
DBusMessage *reply = NULL;
DBusMessageIter iter;
struct wpa_dbus_dict_entry entry;
char *network_object_path = NULL;
char *pg_object_path = NULL;
int persistent_group = 0;
int freq = 0;
char *iface = NULL;
@ -279,35 +298,35 @@ DBusMessage *wpas_dbus_handler_p2p_group_add(DBusMessage * message,
freq = entry.int32_value;
if (freq <= 0)
goto inv_args_clear;
} else if (!strcmp(entry.key, "network_object") &&
} else if (!strcmp(entry.key, "persistent_group_object") &&
entry.type == DBUS_TYPE_OBJECT_PATH)
network_object_path = os_strdup(entry.str_value);
pg_object_path = os_strdup(entry.str_value);
else
goto inv_args_clear;
wpa_dbus_dict_entry_clear(&entry);
}
if (network_object_path != NULL) {
if (pg_object_path != NULL) {
/*
* A Network Object Path is defined meaning we want to re-invoke
* a persisatnt group.
* A persistent group Object Path is defined meaning we want
* to re-invoke a persistent group.
*/
iface = wpas_dbus_new_decompose_object_path(network_object_path,
iface = wpas_dbus_new_decompose_object_path(pg_object_path, 1,
&net_id_str, NULL);
if (iface == NULL ||
os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply =
wpas_dbus_error_invalid_args(message,
network_object_path);
pg_object_path);
goto out;
}
group_id = strtoul(net_id_str, NULL, 10);
if (errno == EINVAL) {
reply = wpas_dbus_error_invalid_args(
message, network_object_path);
message, pg_object_path);
goto out;
}
@ -325,7 +344,7 @@ DBusMessage *wpas_dbus_handler_p2p_group_add(DBusMessage * message,
goto inv_args;
out:
os_free(network_object_path);
os_free(pg_object_path);
os_free(net_id_str);
os_free(iface);
return reply;
@ -500,7 +519,7 @@ DBusMessage *wpas_dbus_handler_p2p_invite(DBusMessage * message,
DBusMessageIter iter;
struct wpa_dbus_dict_entry entry;
char *peer_object_path = NULL;
char *network_object_path = NULL;
char *pg_object_path = NULL;
char *iface = NULL;
char *net_id_str = NULL;
u8 peer_addr[ETH_ALEN];
@ -521,9 +540,9 @@ DBusMessage *wpas_dbus_handler_p2p_invite(DBusMessage * message,
(entry.type == DBUS_TYPE_OBJECT_PATH)) {
peer_object_path = os_strdup(entry.str_value);
wpa_dbus_dict_entry_clear(&entry);
} else if (!strcmp(entry.key, "network_object") &&
} else if (!strcmp(entry.key, "persistent_group_object") &&
(entry.type == DBUS_TYPE_OBJECT_PATH)) {
network_object_path = os_strdup(entry.str_value);
pg_object_path = os_strdup(entry.str_value);
persistent = 1;
wpa_dbus_dict_entry_clear(&entry);
} else {
@ -545,20 +564,20 @@ DBusMessage *wpas_dbus_handler_p2p_invite(DBusMessage * message,
* persisatnt group
*/
iface = wpas_dbus_new_decompose_object_path(network_object_path,
iface = wpas_dbus_new_decompose_object_path(pg_object_path, 1,
&net_id_str, NULL);
if (iface == NULL ||
os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply =
wpas_dbus_error_invalid_args(message,
network_object_path);
pg_object_path);
goto out;
}
group_id = strtoul(net_id_str, NULL, 10);
if (errno == EINVAL) {
reply = wpas_dbus_error_invalid_args(
message, network_object_path);
message, pg_object_path);
goto out;
}
@ -587,7 +606,7 @@ DBusMessage *wpas_dbus_handler_p2p_invite(DBusMessage * message,
}
out:
os_free(network_object_path);
os_free(pg_object_path);
os_free(peer_object_path);
return reply;
@ -1236,9 +1255,9 @@ DBusMessage * wpas_dbus_getter_persistent_groups(DBusMessage *message,
unsigned int i = 0, num = 0;
if (wpa_s->conf == NULL) {
wpa_printf(MSG_ERROR, "dbus: "
"wpas_dbus_getter_persistent_groups: "
"An error occurred getting persistent groups list");
wpa_printf(MSG_ERROR, "dbus: %s: "
"An error occurred getting persistent groups list",
__func__);
return wpas_dbus_error_unknown_error(message, NULL);
}
@ -1302,6 +1321,229 @@ DBusMessage * wpas_dbus_getter_persistent_group_properties(
}
/**
* wpas_dbus_setter_persistent_group_properties - Get options for a persistent
* group
* @message: Pointer to incoming dbus message
* @net: wpa_supplicant structure for a network interface and
* wpa_ssid structure for a configured persistent group (internally network)
* Returns: DBus message with network properties or DBus error on failure
*
* Setter for "Properties" property of a persistent group.
*/
DBusMessage * wpas_dbus_setter_persistent_group_properties(
DBusMessage *message, struct network_handler_args *net)
{
struct wpa_ssid *ssid = net->ssid;
DBusMessage *reply = NULL;
DBusMessageIter iter, variant_iter;
dbus_message_iter_init(message, &iter);
dbus_message_iter_next(&iter);
dbus_message_iter_next(&iter);
dbus_message_iter_recurse(&iter, &variant_iter);
/*
* Leveraging the fact that persistent group object is still
* represented in same manner as network within.
*/
reply = set_network_properties(message, net->wpa_s, ssid,
&variant_iter);
if (reply)
wpa_printf(MSG_DEBUG, "dbus control interface couldn't set "
"persistent group properties");
return reply;
}
/**
* wpas_dbus_new_iface_add_persistent_group - Add a new configured
* persistent_group
* @message: Pointer to incoming dbus message
* @wpa_s: wpa_supplicant structure for a network interface
* Returns: A dbus message containing the object path of the new
* persistent group
*
* Handler function for "AddPersistentGroup" method call of a P2P Device
* interface.
*/
DBusMessage * wpas_dbus_handler_add_persistent_group(
DBusMessage *message, struct wpa_supplicant *wpa_s)
{
DBusMessage *reply = NULL;
DBusMessageIter iter;
struct wpa_ssid *ssid = NULL;
char path_buf[WPAS_DBUS_OBJECT_PATH_MAX], *path = path_buf;
dbus_message_iter_init(message, &iter);
ssid = wpa_config_add_network(wpa_s->conf);
if (ssid == NULL) {
wpa_printf(MSG_ERROR, "dbus: %s: "
"Cannot add new persistent group", __func__);
reply = wpas_dbus_error_unknown_error(
message,
"wpa_supplicant could not add "
"a persistent group on this interface.");
goto err;
}
/* Mark the ssid as being a persistent group before the notification */
ssid->disabled = 2;
ssid->p2p_persistent_group = 1;
wpas_notify_persistent_group_added(wpa_s, ssid);
wpa_config_set_network_defaults(ssid);
reply = set_network_properties(message, wpa_s, ssid, &iter);
if (reply) {
wpa_printf(MSG_DEBUG, "dbus: %s: "
"Control interface could not set persistent group "
"properties", __func__);
goto err;
}
/* Construct the object path for this network. */
os_snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
"%s/" WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART "/%d",
wpa_s->dbus_new_path, ssid->id);
reply = dbus_message_new_method_return(message);
if (reply == NULL) {
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto err;
}
if (!dbus_message_append_args(reply, DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
dbus_message_unref(reply);
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto err;
}
return reply;
err:
if (ssid) {
wpas_notify_persistent_group_removed(wpa_s, ssid);
wpa_config_remove_network(wpa_s->conf, ssid->id);
}
return reply;
}
/**
* wpas_dbus_handler_remove_persistent_group - Remove a configured persistent
* group
* @message: Pointer to incoming dbus message
* @wpa_s: wpa_supplicant structure for a network interface
* Returns: NULL on success or dbus error on failure
*
* Handler function for "RemovePersistentGroup" method call of a P2P Device
* interface.
*/
DBusMessage * wpas_dbus_handler_remove_persistent_group(
DBusMessage *message, struct wpa_supplicant *wpa_s)
{
DBusMessage *reply = NULL;
const char *op;
char *iface = NULL, *persistent_group_id = NULL;
int id;
struct wpa_ssid *ssid;
dbus_message_get_args(message, NULL, DBUS_TYPE_OBJECT_PATH, &op,
DBUS_TYPE_INVALID);
/*
* Extract the network ID and ensure the network is actually a child of
* this interface.
*/
iface = wpas_dbus_new_decompose_object_path(op, 1,
&persistent_group_id,
NULL);
if (iface == NULL || os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
reply = wpas_dbus_error_invalid_args(message, op);
goto out;
}
id = strtoul(persistent_group_id, NULL, 10);
if (errno == EINVAL) {
reply = wpas_dbus_error_invalid_args(message, op);
goto out;
}
ssid = wpa_config_get_network(wpa_s->conf, id);
if (ssid == NULL) {
reply = wpas_dbus_error_persistent_group_unknown(message);
goto out;
}
wpas_notify_persistent_group_removed(wpa_s, ssid);
if (wpa_config_remove_network(wpa_s->conf, id) < 0) {
wpa_printf(MSG_ERROR, "dbus: %s: "
"error occurred when removing persistent group %d",
__func__, id);
reply = wpas_dbus_error_unknown_error(
message,
"error removing the specified persistent group on "
"this interface.");
goto out;
}
out:
os_free(iface);
os_free(persistent_group_id);
return reply;
}
static void remove_persistent_group(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
wpas_notify_persistent_group_removed(wpa_s, ssid);
if (wpa_config_remove_network(wpa_s->conf, ssid->id) < 0) {
wpa_printf(MSG_ERROR, "dbus: %s: "
"error occurred when removing persistent group %d",
__func__, ssid->id);
return;
}
}
/**
* wpas_dbus_handler_remove_all_persistent_groups - Remove all configured
* persistent groups
* @message: Pointer to incoming dbus message
* @wpa_s: wpa_supplicant structure for a network interface
* Returns: NULL on success or dbus error on failure
*
* Handler function for "RemoveAllPersistentGroups" method call of a
* P2P Device interface.
*/
DBusMessage * wpas_dbus_handler_remove_all_persistent_groups(
DBusMessage *message, struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid, *next;
struct wpa_config *config;
config = wpa_s->conf;
ssid = config->ssid;
while (ssid) {
next = ssid->next;
if (network_is_persistent_group(ssid))
remove_persistent_group(wpa_s, ssid);
ssid = next;
}
return NULL;
}
/*
* Group object properties accessor methods
*/

13
wpa_supplicant/dbus/dbus_new_handlers_p2p.h
View file

@ -140,12 +140,23 @@ DBusMessage *wpas_dbus_setter_p2p_group_properties(
struct wpa_supplicant *wpa_s);
/*
* P2P Persistent Group properties
* P2P Persistent Groups and properties
*/
DBusMessage * wpas_dbus_getter_persistent_groups(DBusMessage *message,
struct wpa_supplicant *wpa_s);
DBusMessage * wpas_dbus_getter_persistent_group_properties(
DBusMessage *message, struct network_handler_args *net);
DBusMessage * wpas_dbus_setter_persistent_group_properties(
DBusMessage *message, struct network_handler_args *net);
DBusMessage * wpas_dbus_handler_add_persistent_group(
DBusMessage *message, struct wpa_supplicant *wpa_s);
DBusMessage * wpas_dbus_handler_remove_persistent_group(
DBusMessage *message, struct wpa_supplicant *wpa_s);
DBusMessage * wpas_dbus_handler_remove_all_persistent_groups(
DBusMessage *message, struct wpa_supplicant *wpa_s);
#endif /* DBUS_NEW_HANDLERS_P2P_H */

12
wpa_supplicant/dbus/dbus_new_helpers.c
View file

@ -888,6 +888,8 @@ void wpa_dbus_get_object_properties(struct wpas_dbus_priv *iface,
/**
* wpas_dbus_new_decompose_object_path - Decompose an interface object path into parts
* @path: The dbus object path
* @p2p_persistent_group: indicates whether to parse the path as a P2P
* persistent group object
* @network: (out) the configured network this object path refers to, if any
* @bssid: (out) the scanned bssid this object path refers to, if any
* Returns: The object path of the network interface this path refers to
@ -896,6 +898,7 @@ void wpa_dbus_get_object_properties(struct wpas_dbus_priv *iface,
* and BSSID parts, if those parts exist.
*/
char *wpas_dbus_new_decompose_object_path(const char *path,
int p2p_persistent_group,
char **network,
char **bssid)
{
@ -920,14 +923,19 @@ char *wpas_dbus_new_decompose_object_path(const char *path,
next_sep = os_strchr(obj_path_only + dev_path_prefix_len, '/');
if (next_sep != NULL) {
const char *net_part = os_strstr(
next_sep, WPAS_DBUS_NEW_NETWORKS_PART "/");
next_sep, p2p_persistent_group ?
WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART "/" :
WPAS_DBUS_NEW_NETWORKS_PART "/");
const char *bssid_part = os_strstr(
next_sep, WPAS_DBUS_NEW_BSSIDS_PART "/");
if (network && net_part) {
/* Deal with a request for a configured network */
const char *net_name = net_part +
os_strlen(WPAS_DBUS_NEW_NETWORKS_PART "/");
os_strlen(p2p_persistent_group ?
WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART
"/" :
WPAS_DBUS_NEW_NETWORKS_PART "/");
*network = NULL;
if (os_strlen(net_name))
*network = os_strdup(net_name);

1
wpa_supplicant/dbus/dbus_new_helpers.h
View file

@ -146,6 +146,7 @@ DBusMessage * wpa_dbus_introspect(DBusMessage *message,
struct wpa_dbus_object_desc *obj_dsc);
char *wpas_dbus_new_decompose_object_path(const char *path,
int p2p_persistent_group,
char **network,
char **bssid);

7
wpa_supplicant/notify.c
View file

@ -224,6 +224,13 @@ void wpas_notify_persistent_group_added(struct wpa_supplicant *wpa_s,
}
void wpas_notify_persistent_group_removed(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
wpas_dbus_unregister_persistent_group(wpa_s, ssid->id);
}
void wpas_notify_network_removed(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{

2
wpa_supplicant/notify.h
View file

@ -113,5 +113,7 @@ void wpas_notify_p2p_group_started(struct wpa_supplicant *wpa_s,
int client);
void wpas_notify_persistent_group_added(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid);
void wpas_notify_persistent_group_removed(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid);
#endif /* NOTIFY_H */