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glib/gio/gdbus-tool.c
Ryan Lortie 3160bcad6a GDBusConnection.call(): add 'reply_type' argument 
This allows the caller to specify the reply type that they are expecting
for this call.  If the reply comes back with the wrong type, GDBus will
generate an appropriate error internally.

  - add a GVariantType * argument to g_dbus_connection_call() and
    _call_sync().

  - move the internal API for computing message types from introspection
    data to be based on GVariantType instead of strings.  Update users
    of this code.

  - have GDBusProxy pass this calculated GVariantType into
    g_dbus_connection_call().  Remove the checks done in GDBusProxy.

  - Update other users of the code (test cases, gdbus-tool, GSettings
    tool, etc).  In some cases, remove redundant checks; in some other
    cases, we are fixing bugs because no checking was done where it
    should have been.

Closes bug #619391.
2010-05-24 17:00:04 -04:00

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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <gio/gio.h>
#include <gi18n.h>
/* ---------------------------------------------------------------------------------------------------- */
G_GNUC_UNUSED static void completion_debug (const gchar *format, ...);
/* Uncomment to get debug traces in /tmp/gdbus-completion-debug.txt (nice
* to not have it interfere with stdout/stderr)
*/
#if 0
G_GNUC_UNUSED static void
completion_debug (const gchar *format, ...)
{
va_list var_args;
gchar *s;
static FILE *f = NULL;
va_start (var_args, format);
s = g_strdup_vprintf (format, var_args);
if (f == NULL)
{
f = fopen ("/tmp/gdbus-completion-debug.txt", "a+");
}
fprintf (f, "%s\n", s);
g_free (s);
}
#else
static void
completion_debug (const gchar *format, ...)
{
}
#endif
/* ---------------------------------------------------------------------------------------------------- */
static void
remove_arg (gint num, gint *argc, gchar **argv[])
{
gint n;
g_assert (num <= (*argc));
for (n = num; (*argv)[n] != NULL; n++)
(*argv)[n] = (*argv)[n+1];
(*argv)[n] = NULL;
(*argc) = (*argc) - 1;
}
static void
usage (gint *argc, gchar **argv[], gboolean use_stdout)
{
GOptionContext *o;
gchar *s;
gchar *program_name;
o = g_option_context_new (_("COMMAND"));
g_option_context_set_help_enabled (o, FALSE);
/* Ignore parsing result */
g_option_context_parse (o, argc, argv, NULL);
program_name = g_path_get_basename ((*argv)[0]);
s = g_strdup_printf (_("Commands:\n"
" help Shows this information\n"
" introspect Introspect a remote object\n"
" monitor Monitor a remote object\n"
" call Invoke a method on a remote object\n"
"\n"
"Use \"%s COMMAND --help\" to get help on each command.\n"),
program_name);
g_free (program_name);
g_option_context_set_description (o, s);
g_free (s);
s = g_option_context_get_help (o, FALSE, NULL);
if (use_stdout)
g_print ("%s", s);
else
g_printerr ("%s", s);
g_free (s);
g_option_context_free (o);
}
static void
modify_argv0_for_command (gint *argc, gchar **argv[], const gchar *command)
{
gchar *s;
gchar *program_name;
/* TODO:
* 1. get a g_set_prgname() ?; or
* 2. save old argv[0] and restore later
*/
g_assert (g_strcmp0 ((*argv)[1], command) == 0);
remove_arg (1, argc, argv);
program_name = g_path_get_basename ((*argv)[0]);
s = g_strdup_printf ("%s %s", (*argv)[0], command);
(*argv)[0] = s;
g_free (program_name);
}
/* ---------------------------------------------------------------------------------------------------- */
static void
print_methods (GDBusConnection *c,
const gchar *name,
const gchar *path)
{
GVariant *result;
GError *error;
const gchar *xml_data;
GDBusNodeInfo *node;
guint n;
guint m;
error = NULL;
result = g_dbus_connection_call_sync (c,
name,
path,
"org.freedesktop.DBus.Introspectable",
"Introspect",
NULL,
G_VARIANT_TYPE ("(s)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 secs */
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
goto out;
}
g_variant_get (result, "(&s)", &xml_data);
error = NULL;
node = g_dbus_node_info_new_for_xml (xml_data, &error);
g_variant_unref (result);
if (node == NULL)
{
g_printerr (_("Error parsing introspection XML: %s\n"), error->message);
g_error_free (error);
goto out;
}
for (n = 0; node->interfaces != NULL && node->interfaces[n] != NULL; n++)
{
const GDBusInterfaceInfo *iface = node->interfaces[n];
for (m = 0; iface->methods != NULL && iface->methods[m] != NULL; m++)
{
const GDBusMethodInfo *method = iface->methods[m];
g_print ("%s.%s \n", iface->name, method->name);
}
}
g_dbus_node_info_unref (node);
out:
;
}
static void
print_paths (GDBusConnection *c,
const gchar *name,
const gchar *path)
{
GVariant *result;
GError *error;
const gchar *xml_data;
GDBusNodeInfo *node;
guint n;
error = NULL;
result = g_dbus_connection_call_sync (c,
name,
path,
"org.freedesktop.DBus.Introspectable",
"Introspect",
NULL,
G_VARIANT_TYPE ("(s)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 secs */
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
goto out;
}
g_variant_get (result, "(&s)", &xml_data);
//g_printerr ("xml=`%s'", xml_data);
error = NULL;
node = g_dbus_node_info_new_for_xml (xml_data, &error);
g_variant_unref (result);
if (node == NULL)
{
g_printerr (_("Error parsing introspection XML: %s\n"), error->message);
g_error_free (error);
goto out;
}
//g_printerr ("bar `%s'\n", path);
if (node->interfaces != NULL)
g_print ("%s \n", path);
for (n = 0; node->nodes != NULL && node->nodes[n] != NULL; n++)
{
gchar *s;
//g_printerr ("foo `%s'\n", node->nodes[n].path);
if (g_strcmp0 (path, "/") == 0)
s = g_strdup_printf ("/%s", node->nodes[n]->path);
else
s = g_strdup_printf ("%s/%s", path, node->nodes[n]->path);
print_paths (c, name, s);
g_free (s);
}
g_dbus_node_info_unref (node);
out:
;
}
static void
print_names (GDBusConnection *c,
gboolean include_unique_names)
{
GVariant *result;
GError *error;
GVariantIter *iter;
gchar *str;
GHashTable *name_set;
GList *keys;
GList *l;
name_set = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
error = NULL;
result = g_dbus_connection_call_sync (c,
"org.freedesktop.DBus",
"/org/freedesktop/DBus",
"org.freedesktop.DBus",
"ListNames",
NULL,
G_VARIANT_TYPE ("(as)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 secs */
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
goto out;
}
g_variant_get (result, "(as)", &iter);
while (g_variant_iter_loop (iter, "s", &str))
g_hash_table_insert (name_set, g_strdup (str), NULL);
g_variant_iter_free (iter);
g_variant_unref (result);
error = NULL;
result = g_dbus_connection_call_sync (c,
"org.freedesktop.DBus",
"/org/freedesktop/DBus",
"org.freedesktop.DBus",
"ListActivatableNames",
NULL,
G_VARIANT_TYPE ("(as)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 secs */
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
goto out;
}
g_variant_get (result, "(as)", &iter);
while (g_variant_iter_loop (iter, "s", &str))
g_hash_table_insert (name_set, g_strdup (str), NULL);
g_variant_iter_free (iter);
g_variant_unref (result);
keys = g_hash_table_get_keys (name_set);
keys = g_list_sort (keys, (GCompareFunc) g_strcmp0);
for (l = keys; l != NULL; l = l->next)
{
const gchar *name = l->data;
if (!include_unique_names && g_str_has_prefix (name, ":"))
continue;
g_print ("%s \n", name);
}
g_list_free (keys);
out:
g_hash_table_unref (name_set);
}
/* ---------------------------------------------------------------------------------------------------- */
static gboolean opt_connection_system = FALSE;
static gboolean opt_connection_session = FALSE;
static gchar *opt_connection_address = NULL;
static const GOptionEntry connection_entries[] =
{
{ "system", 'y', 0, G_OPTION_ARG_NONE, &opt_connection_system, N_("Connect to the system bus"), NULL},
{ "session", 'e', 0, G_OPTION_ARG_NONE, &opt_connection_session, N_("Connect to the session bus"), NULL},
{ "address", 'a', 0, G_OPTION_ARG_STRING, &opt_connection_address, N_("Connect to given D-Bus address"), NULL},
{ NULL }
};
static GOptionGroup *
connection_get_group (void)
{
static GOptionGroup *g;
g = g_option_group_new ("connection",
N_("Connection Endpoint Options:"),
N_("Options specifying the connection endpoint"),
NULL,
NULL);
g_option_group_add_entries (g, connection_entries);
return g;
}
static GDBusConnection *
connection_get_dbus_connection (GError **error)
{
GDBusConnection *c;
c = NULL;
/* First, ensure we have exactly one connect */
if (!opt_connection_system && !opt_connection_session && opt_connection_address == NULL)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("No connection endpoint specified"));
goto out;
}
else if ((opt_connection_system && (opt_connection_session || opt_connection_address != NULL)) ||
(opt_connection_session && (opt_connection_system || opt_connection_address != NULL)) ||
(opt_connection_address != NULL && (opt_connection_system || opt_connection_session)))
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Multiple connection endpoints specified"));
goto out;
}
if (opt_connection_system)
{
c = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, error);
}
else if (opt_connection_session)
{
c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, error);
}
else if (opt_connection_address != NULL)
{
c = g_dbus_connection_new_for_address_sync (opt_connection_address,
G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
NULL, /* GDBusAuthObserver */
NULL, /* GCancellable */
error);
}
out:
return c;
}
/* ---------------------------------------------------------------------------------------------------- */
static GPtrArray *
call_helper_get_method_in_signature (GDBusConnection *c,
const gchar *dest,
const gchar *path,
const gchar *interface_name,
const gchar *method_name,
GError **error)
{
GPtrArray *ret;
GVariant *result;
GDBusNodeInfo *node_info;
const gchar *xml_data;
const GDBusInterfaceInfo *interface_info;
const GDBusMethodInfo *method_info;
guint n;
ret = NULL;
result = NULL;
node_info = NULL;
result = g_dbus_connection_call_sync (c,
dest,
path,
"org.freedesktop.DBus.Introspectable",
"Introspect",
NULL,
G_VARIANT_TYPE ("(s)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 secs */
NULL,
error);
if (result == NULL)
goto out;
g_variant_get (result, "(&s)", &xml_data);
node_info = g_dbus_node_info_new_for_xml (xml_data, error);
if (node_info == NULL)
goto out;
interface_info = g_dbus_node_info_lookup_interface (node_info, interface_name);
if (interface_info == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Warning: According to introspection data, interface `%s' does not exist\n"),
interface_name);
goto out;
}
method_info = g_dbus_interface_info_lookup_method (interface_info, method_name);
if (method_info == NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Warning: According to introspection data, method `%s' does not exist on interface `%s'\n"),
method_name,
interface_name);
goto out;
}
ret = g_ptr_array_new_with_free_func ((GDestroyNotify) g_variant_type_free);
for (n = 0; method_info->in_args != NULL && method_info->in_args[n] != NULL; n++)
{
g_ptr_array_add (ret, g_variant_type_new (method_info->in_args[n]->signature));
}
out:
if (node_info != NULL)
g_dbus_node_info_unref (node_info);
if (result != NULL)
g_variant_unref (result);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static GVariant *
_g_variant_parse_me_harder (GVariantType *type,
const gchar *given_str,
GError **error)
{
GVariant *value;
gchar *s;
guint n;
GString *str;
str = g_string_new ("\"");
for (n = 0; given_str[n] != '\0'; n++)
{
if (G_UNLIKELY (given_str[n] == '\"'))
g_string_append (str, "\\\"");
else
g_string_append_c (str, given_str[n]);
}
g_string_append_c (str, '"');
s = g_string_free (str, FALSE);
value = g_variant_parse (type,
s,
NULL,
NULL,
error);
g_free (s);
return value;
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *opt_call_dest = NULL;
static gchar *opt_call_object_path = NULL;
static gchar *opt_call_method = NULL;
static const GOptionEntry call_entries[] =
{
{ "dest", 'd', 0, G_OPTION_ARG_STRING, &opt_call_dest, N_("Destination name to invoke method on"), NULL},
{ "object-path", 'o', 0, G_OPTION_ARG_STRING, &opt_call_object_path, N_("Object path to invoke method on"), NULL},
{ "method", 'm', 0, G_OPTION_ARG_STRING, &opt_call_method, N_("Method and interface name"), NULL},
{ NULL }
};
static gboolean
handle_call (gint *argc,
gchar **argv[],
gboolean request_completion,
const gchar *completion_cur,
const gchar *completion_prev)
{
gint ret;
GOptionContext *o;
gchar *s;
GError *error;
GDBusConnection *c;
GVariant *parameters;
gchar *interface_name;
gchar *method_name;
GVariant *result;
GPtrArray *in_signature_types;
gboolean complete_names;
gboolean complete_paths;
gboolean complete_methods;
GVariantBuilder builder;
guint n;
ret = FALSE;
c = NULL;
parameters = NULL;
interface_name = NULL;
method_name = NULL;
result = NULL;
in_signature_types = NULL;
modify_argv0_for_command (argc, argv, "call");
o = g_option_context_new (NULL);
g_option_context_set_help_enabled (o, FALSE);
g_option_context_set_summary (o, _("Invoke a method on a remote object."));
g_option_context_add_main_entries (o, call_entries, NULL /* GETTEXT_PACKAGE*/);
g_option_context_add_group (o, connection_get_group ());
complete_names = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--dest") == 0)
{
complete_names = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
complete_paths = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--object-path") == 0)
{
complete_paths = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
complete_methods = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--method") == 0)
{
complete_methods = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
if (!g_option_context_parse (o, argc, argv, NULL))
{
if (!request_completion)
{
s = g_option_context_get_help (o, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
}
error = NULL;
c = connection_get_dbus_connection (&error);
if (c == NULL)
{
if (request_completion)
{
if (g_strcmp0 (completion_prev, "--address") == 0)
{
g_print ("unix:\n"
"tcp:\n"
"nonce-tcp:\n");
}
else
{
g_print ("--system \n--session \n--address \n");
}
}
else
{
g_printerr (_("Error connecting: %s\n"), error->message);
g_error_free (error);
}
goto out;
}
/* validate and complete destination (bus name) */
if (g_dbus_connection_get_unique_name (c) != NULL)
{
/* this only makes sense on message bus connections */
if (complete_names)
{
print_names (c, FALSE);
goto out;
}
if (opt_call_dest == NULL)
{
if (request_completion)
g_print ("--dest \n");
else
g_printerr (_("Error: Destination is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--dest", completion_prev) == 0)
{
print_names (c, g_str_has_prefix (opt_call_dest, ":"));
goto out;
}
}
/* validate and complete object path */
if (complete_paths)
{
print_paths (c, opt_call_dest, "/");
goto out;
}
if (opt_call_object_path == NULL)
{
if (request_completion)
g_print ("--object-path \n");
else
g_printerr (_("Error: Object path is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--object-path", completion_prev) == 0)
{
gchar *p;
s = g_strdup (opt_call_object_path);
p = strrchr (s, '/');
if (p != NULL)
{
if (p == s)
p++;
*p = '\0';
}
print_paths (c, opt_call_dest, s);
g_free (s);
goto out;
}
if (!request_completion && !g_variant_is_object_path (opt_call_object_path))
{
g_printerr (_("Error: %s is not a valid object path\n"), opt_call_object_path);
goto out;
}
/* validate and complete method (interface + method name) */
if (complete_methods)
{
print_methods (c, opt_call_dest, opt_call_object_path);
goto out;
}
if (opt_call_method == NULL)
{
if (request_completion)
g_print ("--method \n");
else
g_printerr (_("Error: Method name is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--method", completion_prev) == 0)
{
print_methods (c, opt_call_dest, opt_call_object_path);
goto out;
}
s = strrchr (opt_call_method, '.');
if (!request_completion && s == NULL)
{
g_printerr (_("Error: Method name `%s' is invalid\n"), opt_call_method);
goto out;
}
method_name = g_strdup (s + 1);
interface_name = g_strndup (opt_call_method, s - opt_call_method);
/* All done with completion now */
if (request_completion)
goto out;
/* Introspect, for easy conversion - it's not fatal if we can't do this */
in_signature_types = call_helper_get_method_in_signature (c,
opt_call_dest,
opt_call_object_path,
interface_name,
method_name,
&error);
if (in_signature_types == NULL)
{
//g_printerr ("Error getting introspection data: %s\n", error->message);
g_error_free (error);
error = NULL;
}
/* Read parameters */
g_variant_builder_init (&builder, G_VARIANT_TYPE_TUPLE);
for (n = 1; n < (guint) *argc; n++)
{
GVariant *value;
GVariantType *type;
type = NULL;
if (in_signature_types != NULL)
{
if (n - 1 >= in_signature_types->len)
{
/* Only warn for the first param */
if (n - 1 == in_signature_types->len)
{
g_printerr ("Warning: Introspection data indicates %d parameters but more was passed\n",
in_signature_types->len);
}
}
else
{
type = in_signature_types->pdata[n - 1];
}
}
error = NULL;
value = g_variant_parse (type,
(*argv)[n],
NULL,
NULL,
&error);
if (value == NULL)
{
g_error_free (error);
error = NULL;
value = _g_variant_parse_me_harder (type, (*argv)[n], &error);
if (value == NULL)
{
if (type != NULL)
{
s = g_variant_type_dup_string (type);
g_printerr (_("Error parsing parameter %d of type `%s': %s\n"),
n,
s,
error->message);
g_free (s);
}
else
{
g_printerr (_("Error parsing parameter %d: %s\n"),
n,
error->message);
}
g_error_free (error);
g_variant_builder_clear (&builder);
goto out;
}
}
g_variant_builder_add_value (&builder, value);
}
parameters = g_variant_builder_end (&builder);
if (parameters != NULL)
parameters = g_variant_ref_sink (parameters);
result = g_dbus_connection_call_sync (c,
opt_call_dest,
opt_call_object_path,
interface_name,
method_name,
parameters,
NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
if (in_signature_types != NULL)
{
GString *s;
s = g_string_new (NULL);
for (n = 0; n < in_signature_types->len; n++)
{
GVariantType *type = in_signature_types->pdata[n];
g_string_append_len (s,
g_variant_type_peek_string (type),
g_variant_type_get_string_length (type));
}
g_printerr ("(According to introspection data, you need to pass `%s')\n", s->str);
g_string_free (s, TRUE);
}
goto out;
}
s = g_variant_print (result, TRUE);
g_print ("%s\n", s);
g_free (s);
ret = TRUE;
out:
if (in_signature_types != NULL)
g_ptr_array_unref (in_signature_types);
if (result != NULL)
g_variant_unref (result);
if (c != NULL)
g_object_unref (c);
if (parameters != NULL)
g_variant_unref (parameters);
g_free (interface_name);
g_free (method_name);
g_option_context_free (o);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
/* TODO: dump annotations */
static void
dump_annotation (const GDBusAnnotationInfo *o,
guint indent,
gboolean ignore_indent)
{
guint n;
g_print ("%*s@%s(\"%s\")\n",
ignore_indent ? 0 : indent, "",
o->key,
o->value);
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent + 2, FALSE);
}
static void
dump_arg (const GDBusArgInfo *o,
guint indent,
const gchar *direction,
gboolean ignore_indent,
gboolean include_newline)
{
guint n;
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
{
dump_annotation (o->annotations[n], indent, ignore_indent);
ignore_indent = FALSE;
}
g_print ("%*s%s%s %s%s",
ignore_indent ? 0 : indent, "",
direction,
o->signature,
o->name,
include_newline ? ",\n" : "");
}
static guint
count_args (GDBusArgInfo **args)
{
guint n;
n = 0;
if (args == NULL)
goto out;
while (args[n] != NULL)
n++;
out:
return n;
}
static void
dump_method (const GDBusMethodInfo *o,
guint indent)
{
guint n;
guint m;
guint name_len;
guint total_num_args;
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent, FALSE);
g_print ("%*s%s(", indent, "", o->name);
name_len = strlen (o->name);
total_num_args = count_args (o->in_args) + count_args (o->out_args);
for (n = 0, m = 0; o->in_args != NULL && o->in_args[n] != NULL; n++, m++)
{
gboolean ignore_indent = (m == 0);
gboolean include_newline = (m != total_num_args - 1);
dump_arg (o->in_args[n],
indent + name_len + 1,
"in ",
ignore_indent,
include_newline);
}
for (n = 0; o->out_args != NULL && o->out_args[n] != NULL; n++, m++)
{
gboolean ignore_indent = (m == 0);
gboolean include_newline = (m != total_num_args - 1);
dump_arg (o->out_args[n],
indent + name_len + 1,
"out ",
ignore_indent,
include_newline);
}
g_print (");\n");
}
static void
dump_signal (const GDBusSignalInfo *o,
guint indent)
{
guint n;
guint name_len;
guint total_num_args;
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent, FALSE);
g_print ("%*s%s(", indent, "", o->name);
name_len = strlen (o->name);
total_num_args = count_args (o->args);
for (n = 0; o->args != NULL && o->args[n] != NULL; n++)
{
gboolean ignore_indent = (n == 0);
gboolean include_newline = (n != total_num_args - 1);
dump_arg (o->args[n],
indent + name_len + 1,
"",
ignore_indent,
include_newline);
}
g_print (");\n");
}
static void
dump_property (const GDBusPropertyInfo *o,
guint indent,
GVariant *value)
{
const gchar *access;
guint n;
if (o->flags == G_DBUS_PROPERTY_INFO_FLAGS_READABLE)
access = "readonly";
else if (o->flags == G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE)
access = "writeonly";
else if (o->flags == (G_DBUS_PROPERTY_INFO_FLAGS_READABLE | G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE))
access = "readwrite";
else
g_assert_not_reached ();
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent, FALSE);
if (value != NULL)
{
gchar *s = g_variant_print (value, FALSE);
g_print ("%*s%s %s %s = %s;\n", indent, "", access, o->signature, o->name, s);
g_free (s);
}
else
{
g_print ("%*s%s %s %s;\n", indent, "", access, o->signature, o->name);
}
}
static void
dump_interface (GDBusConnection *c,
const gchar *name,
const GDBusInterfaceInfo *o,
guint indent,
const gchar *object_path)
{
guint n;
GHashTable *properties;
properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
(GDestroyNotify) g_variant_unref);
/* Try to get properties */
if (c != NULL && name != NULL && object_path != NULL && o->properties != NULL)
{
GVariant *result;
result = g_dbus_connection_call_sync (c,
name,
object_path,
"org.freedesktop.DBus.Properties",
"GetAll",
g_variant_new ("(s)", o->name),
NULL,
G_DBUS_CALL_FLAGS_NONE,
3000,
NULL,
NULL);
if (result != NULL)
{
if (g_variant_is_of_type (result, G_VARIANT_TYPE ("(a{sv})")))
{
GVariantIter *iter;
GVariant *item;
g_variant_get (result,
"(a{sv})",
&iter);
while ((item = g_variant_iter_next_value (iter)))
{
gchar *key;
GVariant *value;
g_variant_get (item,
"{sv}",
&key,
&value);
g_hash_table_insert (properties, key, g_variant_ref (value));
}
}
g_variant_unref (result);
}
else
{
guint n;
for (n = 0; o->properties != NULL && o->properties[n] != NULL; n++)
{
result = g_dbus_connection_call_sync (c,
name,
object_path,
"org.freedesktop.DBus.Properties",
"Get",
g_variant_new ("(ss)", o->name, o->properties[n]->name),
G_VARIANT_TYPE ("(v)"),
G_DBUS_CALL_FLAGS_NONE,
3000,
NULL,
NULL);
if (result != NULL)
{
GVariant *property_value;
g_variant_get (result,
"(v)",
&property_value);
g_hash_table_insert (properties,
g_strdup (o->properties[n]->name),
g_variant_ref (property_value));
g_variant_unref (result);
}
}
}
}
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent, FALSE);
g_print ("%*sinterface %s {\n", indent, "", o->name);
if (o->methods != NULL)
{
g_print ("%*s methods:\n", indent, "");
for (n = 0; o->methods[n] != NULL; n++)
dump_method (o->methods[n], indent + 4);
}
if (o->signals != NULL)
{
g_print ("%*s signals:\n", indent, "");
for (n = 0; o->signals[n] != NULL; n++)
dump_signal (o->signals[n], indent + 4);
}
if (o->properties != NULL)
{
g_print ("%*s properties:\n", indent, "");
for (n = 0; o->properties[n] != NULL; n++)
{
dump_property (o->properties[n],
indent + 4,
g_hash_table_lookup (properties, (o->properties[n])->name));
}
}
g_print ("%*s};\n",
indent, "");
g_hash_table_unref (properties);
}
static void
dump_node (GDBusConnection *c,
const gchar *name,
const GDBusNodeInfo *o,
guint indent,
const gchar *object_path)
{
guint n;
const gchar *object_path_to_print;
object_path_to_print = object_path;
if (o->path != NULL)
object_path_to_print = o->path;
for (n = 0; o->annotations != NULL && o->annotations[n] != NULL; n++)
dump_annotation (o->annotations[n], indent, FALSE);
g_print ("%*snode %s", indent, "", object_path_to_print != NULL ? object_path_to_print : "(not set)");
if (o->interfaces != NULL || o->nodes != NULL)
{
g_print (" {\n");
for (n = 0; o->interfaces != NULL && o->interfaces[n] != NULL; n++)
dump_interface (c, name, o->interfaces[n], indent + 2, object_path);
for (n = 0; o->nodes != NULL && o->nodes[n] != NULL; n++)
dump_node (NULL, NULL, o->nodes[n], indent + 2, NULL);
g_print ("%*s};\n",
indent, "");
}
else
{
g_print ("\n");
}
}
static gchar *opt_introspect_dest = NULL;
static gchar *opt_introspect_object_path = NULL;
static const GOptionEntry introspect_entries[] =
{
{ "dest", 'd', 0, G_OPTION_ARG_STRING, &opt_introspect_dest, N_("Destination name to introspect"), NULL},
{ "object-path", 'o', 0, G_OPTION_ARG_STRING, &opt_introspect_object_path, N_("Object path to introspect"), NULL},
{ NULL }
};
static gboolean
handle_introspect (gint *argc,
gchar **argv[],
gboolean request_completion,
const gchar *completion_cur,
const gchar *completion_prev)
{
gint ret;
GOptionContext *o;
gchar *s;
GError *error;
GDBusConnection *c;
GVariant *result;
const gchar *xml_data;
GDBusNodeInfo *node;
gboolean complete_names;
gboolean complete_paths;
ret = FALSE;
c = NULL;
node = NULL;
result = NULL;
modify_argv0_for_command (argc, argv, "introspect");
o = g_option_context_new (NULL);
if (request_completion)
g_option_context_set_ignore_unknown_options (o, TRUE);
g_option_context_set_help_enabled (o, FALSE);
g_option_context_set_summary (o, _("Introspect a remote object."));
g_option_context_add_main_entries (o, introspect_entries, NULL /* GETTEXT_PACKAGE*/);
g_option_context_add_group (o, connection_get_group ());
complete_names = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--dest") == 0)
{
complete_names = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
complete_paths = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--object-path") == 0)
{
complete_paths = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
if (!g_option_context_parse (o, argc, argv, NULL))
{
if (!request_completion)
{
s = g_option_context_get_help (o, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
}
error = NULL;
c = connection_get_dbus_connection (&error);
if (c == NULL)
{
if (request_completion)
{
if (g_strcmp0 (completion_prev, "--address") == 0)
{
g_print ("unix:\n"
"tcp:\n"
"nonce-tcp:\n");
}
else
{
g_print ("--system \n--session \n--address \n");
}
}
else
{
g_printerr (_("Error connecting: %s\n"), error->message);
g_error_free (error);
}
goto out;
}
if (g_dbus_connection_get_unique_name (c) != NULL)
{
if (complete_names)
{
print_names (c, FALSE);
goto out;
}
/* this only makes sense on message bus connections */
if (opt_introspect_dest == NULL)
{
if (request_completion)
g_print ("--dest \n");
else
g_printerr (_("Error: Destination is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--dest", completion_prev) == 0)
{
print_names (c, g_str_has_prefix (opt_introspect_dest, ":"));
goto out;
}
}
if (complete_paths)
{
print_paths (c, opt_introspect_dest, "/");
goto out;
}
if (opt_introspect_object_path == NULL)
{
if (request_completion)
g_print ("--object-path \n");
else
g_printerr (_("Error: Object path is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--object-path", completion_prev) == 0)
{
gchar *p;
s = g_strdup (opt_introspect_object_path);
p = strrchr (s, '/');
if (p != NULL)
{
if (p == s)
p++;
*p = '\0';
}
print_paths (c, opt_introspect_dest, s);
g_free (s);
goto out;
}
if (!request_completion && !g_variant_is_object_path (opt_introspect_object_path))
{
g_printerr (_("Error: %s is not a valid object path\n"), opt_introspect_object_path);
goto out;
}
/* All done with completion now */
if (request_completion)
goto out;
result = g_dbus_connection_call_sync (c,
opt_introspect_dest,
opt_introspect_object_path,
"org.freedesktop.DBus.Introspectable",
"Introspect",
NULL,
G_VARIANT_TYPE ("(s)"),
G_DBUS_CALL_FLAGS_NONE,
3000, /* 3 sec */
NULL,
&error);
if (result == NULL)
{
g_printerr (_("Error: %s\n"), error->message);
g_error_free (error);
goto out;
}
g_variant_get (result, "(&s)", &xml_data);
error = NULL;
node = g_dbus_node_info_new_for_xml (xml_data, &error);
if (node == NULL)
{
g_printerr (_("Error parsing introspection XML: %s\n"), error->message);
g_error_free (error);
goto out;
}
dump_node (c, opt_introspect_dest, node, 0, opt_introspect_object_path);
ret = TRUE;
out:
if (node != NULL)
g_dbus_node_info_unref (node);
if (result != NULL)
g_variant_unref (result);
if (c != NULL)
g_object_unref (c);
g_option_context_free (o);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *opt_monitor_dest = NULL;
static gchar *opt_monitor_object_path = NULL;
static guint monitor_filter_id = 0;
static void
monitor_signal_cb (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
gchar *s;
s = g_variant_print (parameters, TRUE);
g_print ("%s: %s.%s %s\n",
object_path,
interface_name,
signal_name,
s);
g_free (s);
}
static void
monitor_on_name_appeared (GDBusConnection *connection,
const gchar *name,
const gchar *name_owner,
gpointer user_data)
{
g_print ("The name %s is owned by %s\n", name, name_owner);
g_assert (monitor_filter_id == 0);
monitor_filter_id = g_dbus_connection_signal_subscribe (connection,
name_owner,
NULL, /* any interface */
NULL, /* any member */
opt_monitor_object_path,
NULL, /* arg0 */
monitor_signal_cb,
NULL, /* user_data */
NULL); /* user_data destroy notify */
}
static void
monitor_on_name_vanished (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
g_print ("The name %s does not have an owner\n", name);
if (monitor_filter_id != 0)
{
g_dbus_connection_signal_unsubscribe (connection, monitor_filter_id);
monitor_filter_id = 0;
}
}
static const GOptionEntry monitor_entries[] =
{
{ "dest", 'd', 0, G_OPTION_ARG_STRING, &opt_monitor_dest, N_("Destination name to monitor"), NULL},
{ "object-path", 'o', 0, G_OPTION_ARG_STRING, &opt_monitor_object_path, N_("Object path to monitor"), NULL},
{ NULL }
};
static gboolean
handle_monitor (gint *argc,
gchar **argv[],
gboolean request_completion,
const gchar *completion_cur,
const gchar *completion_prev)
{
gint ret;
GOptionContext *o;
gchar *s;
GError *error;
GDBusConnection *c;
GVariant *result;
GDBusNodeInfo *node;
gboolean complete_names;
gboolean complete_paths;
GMainLoop *loop;
ret = FALSE;
c = NULL;
node = NULL;
result = NULL;
modify_argv0_for_command (argc, argv, "monitor");
o = g_option_context_new (NULL);
if (request_completion)
g_option_context_set_ignore_unknown_options (o, TRUE);
g_option_context_set_help_enabled (o, FALSE);
g_option_context_set_summary (o, _("Monitor a remote object."));
g_option_context_add_main_entries (o, monitor_entries, NULL /* GETTEXT_PACKAGE*/);
g_option_context_add_group (o, connection_get_group ());
complete_names = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--dest") == 0)
{
complete_names = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
complete_paths = FALSE;
if (request_completion && *argc > 1 && g_strcmp0 ((*argv)[(*argc)-1], "--object-path") == 0)
{
complete_paths = TRUE;
remove_arg ((*argc) - 1, argc, argv);
}
if (!g_option_context_parse (o, argc, argv, NULL))
{
if (!request_completion)
{
s = g_option_context_get_help (o, FALSE, NULL);
g_printerr ("%s", s);
g_free (s);
goto out;
}
}
error = NULL;
c = connection_get_dbus_connection (&error);
if (c == NULL)
{
if (request_completion)
{
if (g_strcmp0 (completion_prev, "--address") == 0)
{
g_print ("unix:\n"
"tcp:\n"
"nonce-tcp:\n");
}
else
{
g_print ("--system \n--session \n--address \n");
}
}
else
{
g_printerr (_("Error connecting: %s\n"), error->message);
g_error_free (error);
}
goto out;
}
if (g_dbus_connection_get_unique_name (c) != NULL)
{
if (complete_names)
{
print_names (c, FALSE);
goto out;
}
/* this only makes sense on message bus connections */
if (opt_monitor_dest == NULL)
{
if (request_completion)
g_print ("--dest \n");
else
g_printerr (_("Error: Destination is not specified\n"));
goto out;
}
if (request_completion && g_strcmp0 ("--dest", completion_prev) == 0)
{
print_names (c, g_str_has_prefix (opt_monitor_dest, ":"));
goto out;
}
}
if (complete_paths)
{
print_paths (c, opt_monitor_dest, "/");
goto out;
}
if (opt_monitor_object_path == NULL)
{
if (request_completion)
{
g_print ("--object-path \n");
goto out;
}
/* it's fine to not have an object path */
}
if (request_completion && g_strcmp0 ("--object-path", completion_prev) == 0)
{
gchar *p;
s = g_strdup (opt_monitor_object_path);
p = strrchr (s, '/');
if (p != NULL)
{
if (p == s)
p++;
*p = '\0';
}
print_paths (c, opt_monitor_dest, s);
g_free (s);
goto out;
}
if (!request_completion && (opt_monitor_object_path != NULL && !g_variant_is_object_path (opt_monitor_object_path)))
{
g_printerr (_("Error: %s is not a valid object path\n"), opt_monitor_object_path);
goto out;
}
/* All done with completion now */
if (request_completion)
goto out;
if (opt_monitor_object_path != NULL)
g_print ("Monitoring signals on object %s owned by %s\n", opt_monitor_object_path, opt_monitor_dest);
else
g_print ("Monitoring signals from all objects owned by %s\n", opt_monitor_dest);
loop = g_main_loop_new (NULL, FALSE);
g_bus_watch_name_on_connection (c,
opt_monitor_dest,
G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
monitor_on_name_appeared,
monitor_on_name_vanished,
NULL,
NULL);
g_main_loop_run (loop);
g_main_loop_unref (loop);
ret = TRUE;
out:
if (node != NULL)
g_dbus_node_info_unref (node);
if (result != NULL)
g_variant_unref (result);
if (c != NULL)
g_object_unref (c);
g_option_context_free (o);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *
pick_word_at (const gchar *s,
gint cursor,
gint *out_word_begins_at)
{
gint begin;
gint end;
if (s[0] == '\0')
{
if (out_word_begins_at != NULL)
*out_word_begins_at = -1;
return NULL;
}
if (g_ascii_isspace (s[cursor]) && ((cursor > 0 && g_ascii_isspace(s[cursor-1])) || cursor == 0))
{
if (out_word_begins_at != NULL)
*out_word_begins_at = cursor;
return g_strdup ("");
}
while (!g_ascii_isspace (s[cursor - 1]) && cursor > 0)
cursor--;
begin = cursor;
end = begin;
while (!g_ascii_isspace (s[end]) && s[end] != '\0')
end++;
if (out_word_begins_at != NULL)
*out_word_begins_at = begin;
return g_strndup (s + begin, end - begin);
}
gint
main (gint argc, gchar *argv[])
{
gint ret;
const gchar *command;
gboolean request_completion;
gchar *completion_cur;
gchar *completion_prev;
ret = 1;
completion_cur = NULL;
completion_prev = NULL;
g_type_init ();
if (argc < 2)
{
usage (&argc, &argv, FALSE);
goto out;
}
request_completion = FALSE;
//completion_debug ("---- argc=%d --------------------------------------------------------", argc);
again:
command = argv[1];
if (g_strcmp0 (command, "help") == 0)
{
if (request_completion)
{
/* do nothing */
}
else
{
usage (&argc, &argv, TRUE);
ret = 0;
}
goto out;
}
else if (g_strcmp0 (command, "call") == 0)
{
if (handle_call (&argc,
&argv,
request_completion,
completion_cur,
completion_prev))
ret = 0;
goto out;
}
else if (g_strcmp0 (command, "introspect") == 0)
{
if (handle_introspect (&argc,
&argv,
request_completion,
completion_cur,
completion_prev))
ret = 0;
goto out;
}
else if (g_strcmp0 (command, "monitor") == 0)
{
if (handle_monitor (&argc,
&argv,
request_completion,
completion_cur,
completion_prev))
ret = 0;
goto out;
}
else if (g_strcmp0 (command, "complete") == 0 && argc == 4 && !request_completion)
{
const gchar *completion_line;
gchar **completion_argv;
gint completion_argc;
gint completion_point;
gchar *endp;
gint cur_begin;
request_completion = TRUE;
completion_line = argv[2];
completion_point = strtol (argv[3], &endp, 10);
if (endp == argv[3] || *endp != '\0')
goto out;
#if 0
completion_debug ("completion_point=%d", completion_point);
completion_debug ("----");
completion_debug (" 0123456789012345678901234567890123456789012345678901234567890123456789");
completion_debug ("`%s'", completion_line);
completion_debug (" %*s^",
completion_point, "");
completion_debug ("----");
#endif
if (!g_shell_parse_argv (completion_line,
&completion_argc,
&completion_argv,
NULL))
{
/* it's very possible the command line can't be parsed (for
* example, missing quotes etc) - in that case, we just
* don't autocomplete at all
*/
goto out;
}
/* compute cur and prev */
completion_prev = NULL;
completion_cur = pick_word_at (completion_line, completion_point, &cur_begin);
if (cur_begin > 0)
{
gint prev_end;
for (prev_end = cur_begin - 1; prev_end >= 0; prev_end--)
{
if (!g_ascii_isspace (completion_line[prev_end]))
{
completion_prev = pick_word_at (completion_line, prev_end, NULL);
break;
}
}
}
#if 0
completion_debug (" cur=`%s'", completion_cur);
completion_debug ("prev=`%s'", completion_prev);
#endif
argc = completion_argc;
argv = completion_argv;
ret = 0;
goto again;
}
else
{
if (request_completion)
{
g_print ("help \ncall \nintrospect \nmonitor \n");
ret = 0;
goto out;
}
else
{
g_printerr ("Unknown command `%s'\n", command);
usage (&argc, &argv, FALSE);
goto out;
}
}
out:
g_free (completion_cur);
g_free (completion_prev);
return ret;
}
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