diff options
Diffstat (limited to 'droute/droute.c')
| -rw-r--r-- | droute/droute.c | 682 |
1 files changed, 418 insertions, 264 deletions
diff --git a/droute/droute.c b/droute/droute.c index e4c1f91..5b1d9de 100644 --- a/droute/droute.c +++ b/droute/droute.c @@ -3,6 +3,7 @@ * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap) * * Copyright 2008 Novell, Inc. + * Copyright 2008 Codethink Ltd. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -24,311 +25,464 @@ #include <string.h> #include "droute.h" +#include "droute-pairhash.h" -static DRouteInterface * -find_iface (DRouteData * data, const char *name) +#define CHUNKS_DEFAULT (512) + +#define oom() g_error ("D-Bus out of memory, this message will fail anyway") + +struct _DRouteContext { - GSList *l; + DBusConnection *bus; + GPtrArray *registered_paths; - for (l = data->interfaces; l; l = g_slist_next (l)) - { - DRouteInterface *iface = (DRouteInterface *) l->data; - if (iface && iface->name && !strcmp (iface->name, name)) - return iface; - } - return NULL; -} + gchar *introspect_dir; +}; + +struct _DRoutePath +{ + DRouteContext *cnx; + GStringChunk *chunks; + GPtrArray *interfaces; + GHashTable *methods; + GHashTable *properties; + + void *user_data; + DRouteGetDatumFunction get_datum; +}; + +/*---------------------------------------------------------------------------*/ + +typedef struct PropertyPair +{ + DRoutePropertyFunction get; + DRoutePropertyFunction set; +} PropertyPair; + +/*---------------------------------------------------------------------------*/ static DBusHandlerResult -prop_get_all (DBusConnection * bus, DBusMessage * message, DRouteData * data) +handle_message (DBusConnection *bus, DBusMessage *message, void *user_data); + +/*---------------------------------------------------------------------------*/ + +static DRoutePath * +path_new (DRouteContext *cnx, + void *user_data, + DRouteGetDatumFunction get_datum) { - DRouteInterface *iface_def; - DRouteProperty *prop; - DBusError error; - const char *iface; - const char *path = dbus_message_get_path (message); - DBusMessage *reply; - DBusMessageIter iter, iter_dict, iter_dict_entry; - - dbus_error_init (&error); - if (!dbus_message_get_args - (message, &error, DBUS_TYPE_STRING, &iface, DBUS_TYPE_INVALID)) - { - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - } - reply = dbus_message_new_method_return (message); - /* tbd: replace tbd with todo? */ - if (!reply) - goto oom; - dbus_message_iter_init_append (reply, &iter); - if (!dbus_message_iter_open_container - (&iter, DBUS_TYPE_ARRAY, "{sv}", &iter_dict)) - goto oom; - iface_def = find_iface (data, iface); - if (!iface_def) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - if (iface_def->properties) - for (prop = iface_def->properties; prop->name; prop++) - { - if (!prop->get) - continue; - if (!dbus_message_iter_open_container - (&iter_dict, DBUS_TYPE_DICT_ENTRY, NULL, &iter_dict_entry)) - goto oom; - dbus_message_iter_append_basic (&iter_dict_entry, DBUS_TYPE_STRING, - &prop->name); - (*prop->get) (path, &iter_dict_entry, data->user_data); - if (!dbus_message_iter_close_container (&iter_dict, &iter_dict_entry)) - goto oom; - } - if (!dbus_message_iter_close_container (&iter, &iter_dict)) - goto oom; - dbus_connection_send (bus, reply, NULL); - dbus_message_unref (reply); - return DBUS_HANDLER_RESULT_HANDLED; -oom: - /* tbd: return a standard out-of-memory error */ - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + DRoutePath *new_path; + + new_path = g_new0 (DRoutePath, 0); + new_path->cnx = cnx; + new_path->chunks = g_string_chunk_new (CHUNKS_DEFAULT); + new_path->interfaces = g_ptr_array_new (); + + new_path->methods = g_hash_table_new_full ((GHashFunc)str_pair_hash, + str_pair_equal, + g_free, + NULL); + + new_path->properties = g_hash_table_new_full ((GHashFunc)str_pair_hash, + str_pair_equal, + g_free, + NULL); + + new_path->user_data = user_data; + new_path->get_datum = get_datum; + + return new_path; } -static DBusHandlerResult -prop (DBusConnection * bus, DBusMessage * message, DRouteData * data) +static void +path_free (DRoutePath *path, gpointer user_data) { - const char *mode = dbus_message_get_member (message); - const char *iface, *member; - const char *path = dbus_message_get_path (message); - int set; - DBusMessage *reply; - DBusMessageIter iter; - DRouteInterface *iface_def; - DRouteProperty *prop = NULL; - - if (!strcmp (mode, "Set")) - set = 1; - else if (!strcmp (mode, "Get")) - set = 0; - else - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - reply = dbus_message_new_method_return (message); - dbus_message_iter_init (message, &iter); - dbus_message_iter_get_basic (&iter, &iface); - dbus_message_iter_next (&iter); - dbus_message_iter_get_basic (&iter, &member); - if (!set) - dbus_message_iter_init_append (reply, &iter); - iface_def = find_iface (data, iface); - if (!iface_def) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - if (iface_def->properties) - for (prop = iface_def->properties; - prop->name && strcmp (prop->name, member); prop++) - if (!prop || !prop->name) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - if (set) - { - if (!prop->set) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - (*prop->set) (path, &iter, data->user_data); - } - else - { - if (!prop->get) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - (*prop->get) (path, &iter, data->user_data); - } - dbus_connection_send (bus, reply, NULL); - dbus_message_unref (reply); - return DBUS_HANDLER_RESULT_HANDLED; + g_string_chunk_free (path->chunks); + g_ptr_array_free (path->interfaces, TRUE); + g_hash_table_destroy (path->methods); + g_hash_table_destroy (path->properties); } -DBusHandlerResult -droute_message (DBusConnection * bus, DBusMessage * message, void *user_data) +static void * +path_get_datum (DRoutePath *path, const gchar *pathstr) { - DRouteData *data = (DRouteData *) user_data; - DRouteInterface *iface_def; - DRouteMethod *method; - const char *iface = dbus_message_get_interface (message); - const char *member = dbus_message_get_member (message); - int type; - DBusError error; - DBusMessage *reply; - - dbus_error_init (&error); - if (!member) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - if (iface && !strcmp (iface, "org.freedesktop.DBus.Properties")) - { - if (!strcmp (member, "GetAll")) - return prop_get_all (bus, message, data); - return prop (bus, message, data); - } - if (iface) - { - iface_def = find_iface (data, iface); - if (!iface_def) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - if (iface_def->methods) - for (method = iface_def->methods; method->func; method++) - { - if (!strcmp (method->name, member)) - { - reply = - (*method->func) (bus, message, - (method->wants_droute_data ? data : data-> - user_data)); - if (reply) - { - dbus_connection_send (bus, reply, NULL); - dbus_message_unref (reply); - } - return DBUS_HANDLER_RESULT_HANDLED; - } - } - } - else - { - GSList *l; - if (type == DBUS_MESSAGE_TYPE_SIGNAL) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - for (l = data->interfaces; l; l = g_slist_next (l)) - { - iface_def = (DRouteInterface *) l->data; - if (iface_def->methods) - for (method = iface_def->methods; method->func; method++) - { - if (!strcmp (method->name, member)) - { - reply = (*method->func) (bus, message, data->user_data); - if (reply) - { - dbus_connection_send (bus, reply, NULL); - dbus_message_unref (reply); - } - return DBUS_HANDLER_RESULT_HANDLED; - } - } - } - } - return DBUS_HANDLER_RESULT_HANDLED; + if (path->get_datum != NULL) + return (path->get_datum) (pathstr, path->user_data); + else + return path->user_data; } -dbus_bool_t -droute_return_v_int32 (DBusMessageIter * iter, dbus_int32_t val) +/*---------------------------------------------------------------------------*/ + +DRouteContext * +droute_new (DBusConnection *bus, const char *introspect_dir) { - DBusMessageIter sub; + DRouteContext *cnx; - if (!dbus_message_iter_open_container - (iter, DBUS_TYPE_VARIANT, DBUS_TYPE_INT32_AS_STRING, &sub)) - { - return FALSE; - } - dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &val); - dbus_message_iter_close_container (iter, &sub); - return TRUE; + cnx = g_new0 (DRouteContext, 1); + cnx->bus = bus; + cnx->registered_paths = g_ptr_array_new (); + cnx->introspect_dir = g_strdup(introspect_dir); } -dbus_bool_t -droute_return_v_double (DBusMessageIter * iter, double val) +void +droute_free (DRouteContext *cnx) { - DBusMessageIter sub; + g_pointer_array_foreach ((GFunc) path_free, cnx->registered_paths, NULL); + g_free (cnx->introspect_dir); + g_free (cnx); +} - if (!dbus_message_iter_open_container - (iter, DBUS_TYPE_VARIANT, DBUS_TYPE_DOUBLE_AS_STRING, &sub)) - { - return FALSE; - } - dbus_message_iter_append_basic (&sub, DBUS_TYPE_DOUBLE, &val); - dbus_message_iter_close_container (iter, &sub); - return TRUE; +/*---------------------------------------------------------------------------*/ + +static DBusObjectPathVTable droute_vtable = +{ + NULL, + &handle_message, + NULL, NULL, NULL, NULL +}; + +DRoutePath * +droute_add_one (DRouteContext *cnx, + const char *path, + const void *data) +{ + DRoutePath *new_path; + + new_path = path_new (cnx, (void *) data, NULL); + + if (!dbus_connection_register_object_path (cnx->bus, path, &droute_vtable, new_path)) + oom(); + + g_ptr_array_add (cnx->registered_paths, new_path); + return new_path; } -/* Return a string in a variant - * will return an empty string if passed a NULL value */ -dbus_bool_t -droute_return_v_string (DBusMessageIter * iter, const char *val) +DRoutePath * +droute_add_many (DRouteContext *cnx, + const char *path, + const void *data, + const DRouteGetDatumFunction get_datum) { - DBusMessageIter sub; + DRoutePath *new_path; - if (!val) - val = ""; - if (!dbus_message_iter_open_container - (iter, DBUS_TYPE_VARIANT, DBUS_TYPE_STRING_AS_STRING, &sub)) - { - return FALSE; - } - dbus_message_iter_append_basic (&sub, DBUS_TYPE_STRING, &val); - dbus_message_iter_close_container (iter, &sub); - return TRUE; + new_path = path_new (cnx, (void *) data, get_datum); + + if (!dbus_connection_register_fallback (cnx->bus, path, &droute_vtable, new_path)) + oom(); + + g_ptr_array_add (cnx->registered_paths, new_path); + return new_path; } -dbus_int32_t -droute_get_v_int32 (DBusMessageIter * iter) +/*---------------------------------------------------------------------------*/ + +void +droute_path_add_interface(DRoutePath *path, + const char *name, + const DRouteMethod *methods, + const DRouteProperty *properties) { - DBusMessageIter sub; - dbus_int32_t rv; + gchar *itf; + + g_return_if_fail (name == NULL); + + itf = g_string_chunk_insert (path->chunks, name); + g_ptr_array_add (path->interfaces, itf); + + for (; methods->name != NULL; methods++) + { + gchar *meth; + + meth = g_string_chunk_insert (path->chunks, methods->name); + g_hash_table_insert (path->methods, str_pair_new (itf, meth), methods->func); + } - // TODO- ensure we have the correct type - dbus_message_iter_recurse (iter, &sub); - dbus_message_iter_get_basic (&sub, &rv); - return rv; + for (; properties->name != NULL; properties++) + { + gchar *prop; + PropertyPair *pair; + + prop = g_string_chunk_insert (path->chunks, properties->name); + pair = g_new (PropertyPair, 1); + pair->get = properties->get; + pair->set = properties->set; + g_hash_table_insert (path->properties, str_pair_new (itf, prop), pair); + } } -const char * -droute_get_v_string (DBusMessageIter * iter) +/*---------------------------------------------------------------------------*/ + +/* The data structures don't support an efficient implementation of GetAll + * and I don't really care. + */ +static DBusMessage * +impl_prop_GetAll (DBusMessage *message, + DRoutePath *path, + const char *pathstr) { - DBusMessageIter sub; - char *rv; + DBusMessageIter iter, iter_dict, iter_dict_entry; + DBusMessage *reply; + DBusError error; + GHashTableIter prop_iter; + + StrPair *key; + PropertyPair *value; + gchar *iface; + + void *datum = path_get_datum (path, pathstr); + + dbus_error_init (&error); - // TODO- ensure we have the correct type - dbus_message_iter_recurse (iter, &sub); - dbus_message_iter_get_basic (&sub, &rv); - return rv; + if (!dbus_message_get_args + (message, &error, DBUS_TYPE_STRING, &iface, DBUS_TYPE_INVALID)) + return dbus_message_new_error (message, DBUS_ERROR_FAILED, error.message); + + reply = dbus_message_new_method_return (message); + if (!reply) + oom (); + + dbus_message_iter_init_append (reply, &iter); + if (!dbus_message_iter_open_container + (&iter, DBUS_TYPE_ARRAY, "{sv}", &iter_dict)) + oom (); + + g_hash_table_iter_init (&prop_iter, path->properties); + while (g_hash_table_iter_next (&prop_iter, (gpointer*)&key, (gpointer*)&value)) + { + if (!g_strcmp (key->one, iface)) + { + if (!value->get) + continue; + if (!dbus_message_iter_open_container + (&iter_dict, DBUS_TYPE_DICT_ENTRY, NULL, &iter_dict_entry)) + oom (); + dbus_message_iter_append_basic (&iter_dict_entry, DBUS_TYPE_STRING, + key->two); + (value->get) (&iter_dict_entry, datum); + if (!dbus_message_iter_close_container (&iter_dict, &iter_dict_entry)) + oom (); + } + } + + if (!dbus_message_iter_close_container (&iter, &iter_dict)) + oom (); + return reply; } -dbus_bool_t -droute_return_v_object (DBusMessageIter * iter, const char *path) +static DBusMessage * +impl_prop_GetSet (DBusMessage *message, + DRoutePath *path, + const char *pathstr, + gboolean get) { - DBusMessageIter sub; + DBusMessage *reply = NULL; + DBusError error; - if (!dbus_message_iter_open_container - (iter, DBUS_TYPE_VARIANT, DBUS_TYPE_OBJECT_PATH_AS_STRING, &sub)) - { - return FALSE; - } - dbus_message_iter_append_basic (&sub, DBUS_TYPE_OBJECT_PATH, &path); - dbus_message_iter_close_container (iter, &sub); - return TRUE; + StrPair pair; + PropertyPair *prop_funcs; + + if (!dbus_message_get_args (message, + &error, + DBUS_TYPE_STRING, + &(pair.one), + DBUS_TYPE_STRING, + &(pair.two), + DBUS_TYPE_INVALID)) + return dbus_message_new_error (message, DBUS_ERROR_FAILED, error.message); + + prop_funcs = (PropertyPair *) g_hash_table_lookup (path->properties, &pair); + if (!prop_funcs) + return dbus_message_new_error (message, DBUS_ERROR_FAILED, "Property unavailable"); + + if (get && prop_funcs->get) + { + void *datum = path_get_datum (path, pathstr); + DBusMessageIter iter; + + reply = dbus_message_new_method_return (message); + dbus_message_iter_init_append (reply, &iter); + (prop_funcs->get) (&iter, datum); + } + else if (!get && prop_funcs->set) + { + void *datum = path_get_datum (path, pathstr); + DBusMessageIter iter; + + dbus_message_iter_init_append (message, &iter); + /* Skip the interface and property name */ + dbus_message_iter_next(&iter); + dbus_message_iter_next(&iter); + (prop_funcs->get) (&iter, datum); + } + return reply; } -dbus_bool_t -droute_add_interface (DRouteData * data, const char *name, - DRouteMethod * methods, DRouteProperty * properties, - DRouteGetDatumFunction get_datum, - DRouteFreeDatumFunction free_datum) +static DBusHandlerResult +handle_properties (DBusConnection *bus, + DBusMessage *message, + DRoutePath *path, + const gchar *iface, + const gchar *member, + const gchar *pathstr) { - DRouteInterface *iface = - (DRouteInterface *) malloc (sizeof (DRouteInterface)); - GSList *new_list; - - if (!iface) - return FALSE; - iface->name = strdup (name); - if (!iface->name) + DBusMessage *reply; + DBusHandlerResult result = DBUS_HANDLER_RESULT_HANDLED; + + if (!g_strcmp0(member, "GetAll")) + reply = impl_prop_GetAll (message, path, pathstr); + else if (!g_strcmp0 (member, "Get")) + reply = impl_prop_GetSet (message, path, pathstr, TRUE); + else if (!g_strcmp0 (member, "Set")) + reply = impl_prop_GetSet (message, path, pathstr, FALSE); + else + result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + return result; +} + +/*---------------------------------------------------------------------------*/ + +static const char *introspection_header = +"<?xml version=\"1.0\"?>\n"; + +static const char *introspection_node_element = +"<node name=\"%s\">\n"; + +static const char *introspection_footer = +"</node>"; + +static void +append_interface (GString *str, + const gchar *interface, + const gchar *directory) +{ + gchar *filename; + gchar *contents; + gsize len; + + GError *err = NULL; + + filename = g_build_filename (directory, interface, NULL); + + if (g_file_get_contents (filename, &contents, &len, &err)) { - free (iface); - return FALSE; + g_string_append_len (str, contents, len); } - iface->methods = methods; - iface->properties = properties; - iface->get_datum = get_datum; - iface->free_datum = free_datum; - new_list = g_slist_append (data->interfaces, iface); - if (!new_list) + else { - free (iface->name); - free (iface); - return FALSE; + g_warning ("AT-SPI: Cannot find introspection XML file %s - %s", + filename, err->message); + g_error_free (err); } - data->interfaces = new_list; - return TRUE; + + g_string_append (str, "\n"); + g_free (filename); + g_free (contents); } + +static DBusHandlerResult +handle_intropsection (DBusConnection *bus, + DBusMessage *message, + DRoutePath *path, + const gchar *iface, + const gchar *member, + const gchar *pathstr) +{ + GString *output; + gchar *final; + gint i; + + DBusMessage *reply; + + if (g_strcmp (member, "Introspect")) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + output = g_string_new(introspection_header); + + g_string_append_printf(output, introspection_node_element, pathstr); + + for (i=0; i < path->interfaces->len; i++) + { + gchar *interface = (gchar *) g_ptr_array_index (path->interfaces, i); + append_interface(output, interface, path->cnx->introspect_dir); + } + + g_string_append(output, introspection_footer); + final = g_string_free(output, FALSE); + + reply = dbus_message_new_method_return (message); + if (!reply) + oom (); + dbus_message_append_args(reply, DBUS_TYPE_STRING, &final, + DBUS_TYPE_INVALID); + dbus_connection_send (bus, reply, NULL); + + dbus_message_unref (reply); + g_free(final); + return DBUS_HANDLER_RESULT_HANDLED; +} + +/*---------------------------------------------------------------------------*/ + +static DBusHandlerResult +handle_other (DBusConnection *bus, + DBusMessage *message, + DRoutePath *path, + const gchar *iface, + const gchar *member, + const gchar *pathstr) +{ + gint result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + StrPair pair; + DRouteFunction func; + DBusMessage *reply; + + pair.one = iface; + pair.two = member; + + func = (DRouteFunction) g_hash_table_lookup (path->methods, &pair); + if (func != NULL) + { + void *datum = path_get_datum (path, pathstr); + + reply = (func) (bus, message, datum); + + if (reply) + { + dbus_connection_send (bus, reply, NULL); + dbus_message_unref (reply); + } + result = DBUS_HANDLER_RESULT_HANDLED; + } + return result; +} + +/*---------------------------------------------------------------------------*/ + +static DBusHandlerResult +handle_message (DBusConnection *bus, DBusMessage *message, void *user_data) +{ + DRoutePath *path = (DRoutePath *) user_data; + const gchar *iface = dbus_message_get_interface (message); + const gchar *member = dbus_message_get_member (message); + const gint type = dbus_message_get_type (message); + const gchar *pathstr = dbus_message_get_path (message); + + /* Check for basic reasons not to handle */ + if (type != DBUS_MESSAGE_TYPE_METHOD_CALL || + member == NULL || + iface == NULL) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + if (!strcmp (iface, "org.freedesktop.DBus.Properties")) + return handle_properties (bus, message, path, iface, member, pathstr); + + if (!strcmp (iface, "org.freedesktop.DBus.Introspectable")) + return handle_introspection (bus, message, path, iface, member, pathstr); + + return handle_other (bus, message, path, iface, member, pathstr); +} + +/*END------------------------------------------------------------------------*/ |