X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-client%2Fclient.c;h=43b9fc1fbf641aa9456e8db53afc29dd181ccc1f;hb=7231641e5c53a9d1c255e06a7a134fa60a919f88;hp=949e5ef39336558c76ec018543a39d4ce8618c7c;hpb=64dff8088b43bd2f367f35e18bf02e73c8052dec;p=catta diff --git a/avahi-client/client.c b/avahi-client/client.c index 949e5ef..43b9fc1 100644 --- a/avahi-client/client.c +++ b/avahi-client/client.c @@ -1,11 +1,350 @@ +/* $Id$ */ + +/*** + This file is part of avahi. + + avahi is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + avahi is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General + Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with avahi; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include +#endif + #include +#include +#include +#include +#include +#include +#include + +#define DBUS_API_SUBJECT_TO_CHANGE +#include +#include + +#include + +#include "client.h" +#include "internal.h" + +int +avahi_client_set_errno (AvahiClient *client, int errno) +{ + if (client == NULL) return errno; + + client->errno = errno; + + return errno; +} + +static +void avahi_client_state_change (AvahiClient *client, int state) +{ + if (client == NULL || client->callback == NULL) + return; + + client->callback (client, state, client->user_data); +} + +void +avahi_client_state_request_callback (DBusPendingCall *call, void *data) +{ + AvahiClient *client = data; + DBusError error; + DBusMessage *reply; + int state, type; + + dbus_error_init (&error); + + reply = dbus_pending_call_steal_reply (call); + + type = dbus_message_get_type (reply); + + if (type == DBUS_MESSAGE_TYPE_METHOD_RETURN) + { + dbus_message_get_args (reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "internal error parsing client state change for client\n"); + return; + } + + printf ("statechange (client) to %d\n", state); + + avahi_client_state_change (client, state); + } else if (type == DBUS_MESSAGE_TYPE_ERROR) { + dbus_set_error_from_message (&error, reply); + fprintf (stderr, "Error from reply: %s\n", error.message); + } + + dbus_pending_call_unref (call); +} + +void +avahi_client_schedule_state_request (AvahiClient *client) +{ + DBusMessage *message; + DBusPendingCall *pcall; + + if (client == NULL) return; + + message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState"); + + dbus_connection_send_with_reply (client->bus, message, &pcall, -1); + + dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL); +} + +static DBusHandlerResult +filter_func (DBusConnection *bus, DBusMessage *message, void *data) +{ + AvahiClient *client = data; + DBusError error; + + printf ("dbus: interface=%s, path=%s, member=%s\n", + dbus_message_get_interface (message), + dbus_message_get_path (message), + dbus_message_get_member (message)); + + dbus_error_init (&error); + + if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) { + gchar *name, *old, *new; + dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID); + + if (dbus_error_is_set (&error)) { + fprintf(stderr, "Failed to parse NameOwnerChanged message: %s", error.message); + dbus_error_free (&error); + goto out; + } + + if (strcmp (name, AVAHI_DBUS_NAME) == 0) { + + if (old == NULL && new != NULL) { + fprintf(stderr, "Avahi Daemon connected\n"); + avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED); + } else if (old != NULL && new == NULL) { + fprintf(stderr, "Avahi Daemon disconnected\n"); + avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED); + /* XXX: we really need to expire all entry groups */ + } + } + } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) { + printf ("server statehcange\n"); + } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) { + const char *path; + AvahiEntryGroup *n, *group = NULL; + path = dbus_message_get_path (message); + + for (n = client->groups; n != NULL; n = n->groups_next) + { + if (strcmp (n->path, path) == 0) + { + group = n; + break; + } + } + + if (group == NULL) + { + fprintf (stderr, "Received state change for unknown EntryGroup object (%s)\n", path); + } else { + int state; + DBusError error; + + dbus_error_init (&error); + + dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "internal error parsing entrygroup statechange for %s\n", group->path); + goto out; + } + + printf ("statechange (%s) to %d\n", group->path, state); + + avahi_entry_group_state_change (group, state); + } + } + + return DBUS_HANDLER_RESULT_HANDLED; + +out: + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} AvahiClient * -avahi_client_new () +avahi_client_new (AvahiClientCallback callback, void *user_data) { - AvahiClient *tmp; + AvahiClient *tmp = NULL; + DBusError error; - tmp = g_new0 (AvahiClient, 1); + tmp = g_new (AvahiClient, 1); - return tmp; + if (tmp == NULL) + goto fail; + + AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups); + + dbus_error_init (&error); + + tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error); + + dbus_connection_setup_with_g_main (tmp->bus, NULL); + + if (dbus_error_is_set (&error)) { + fprintf(stderr, "Error getting system d-bus: %s\n", error.message); + dbus_error_free (&error); + goto fail; + } + + dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE); + + if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL)) + { + fprintf (stderr, "Failed to add d-bus filter\n"); + goto fail; + } + + dbus_bus_add_match (tmp->bus, + "type='signal', " + "interface='" AVAHI_DBUS_INTERFACE_SERVER "', " + "sender='" AVAHI_DBUS_NAME "', " + "path='" AVAHI_DBUS_PATH_SERVER "'", + &error); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "Error adding filter match: %s\n", error.message); + dbus_error_free (&error); + goto fail; + + } + + dbus_bus_add_match (tmp->bus, + "type='signal', " + "interface='" DBUS_INTERFACE_DBUS "', " + "sender='" DBUS_SERVICE_DBUS "', " + "path='" DBUS_PATH_DBUS "'", + &error); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "Error adding filter match: %s\n", error.message); + dbus_error_free (&error); + goto fail; + } + + tmp->callback = callback; + tmp->user_data = user_data; + + avahi_client_schedule_state_request (tmp); + + avahi_client_set_errno (tmp, AVAHI_OK); + return tmp; + +fail: + if (tmp) free (tmp); + return NULL; +} + +static char* +avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param) +{ + DBusMessage *message; + DBusMessage *reply; + DBusError error; + char *ret, *new; + + if (client == NULL || method == NULL) return NULL; + + dbus_error_init (&error); + + message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method); + + if (param != NULL) + { + if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID)) + { + avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR); + fprintf (stderr, "Failed to append string argument to %s message\n", method); + return NULL; + } + } + + reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "Error sending %s message: %s\n", method, error.message); + dbus_error_free (&error); + dbus_message_unref (message); + + avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR); + return NULL; + } + + if (reply == NULL) + { + dbus_message_unref (message); + fprintf (stderr, "Could not connect to Avahi daemon\n"); + + avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR); + return NULL; + } + + dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID); + + if (dbus_error_is_set (&error)) + { + fprintf (stderr, "Failed to parse %s reply: %s\n", method, error.message); + dbus_error_free (&error); + + avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR); + return NULL; + } + + new = strdup (ret); + + avahi_client_set_errno (client, AVAHI_OK); + return new; +} + +char* +avahi_client_get_version_string (AvahiClient *client) +{ + return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL); +} + +char* +avahi_client_get_domain_name (AvahiClient *client) +{ + return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL); +} + +char* +avahi_client_get_host_name (AvahiClient *client) +{ + return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL); +} + +char* +avahi_client_get_host_name_fqdn (AvahiClient *client) +{ + return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL); }