blob: 3e2a92861257f5761c5f6a3fffc61ddf41fbf2d0 [file] [log] [blame] [raw]
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include "sd-bus.h"
#include "alloc-util.h"
#include "bus-dump.h"
#include "bus-internal.h"
#include "bus-message.h"
#include "bus-signature.h"
#include "bus-type.h"
#include "bus-util.h"
#include "busctl-introspect.h"
#include "escape.h"
#include "fd-util.h"
#include "fileio.h"
#include "format-table.h"
#include "json.h"
#include "locale-util.h"
#include "log.h"
#include "main-func.h"
#include "pager.h"
#include "parse-util.h"
#include "path-util.h"
#include "pretty-print.h"
#include "set.h"
#include "sort-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "user-util.h"
#include "verbs.h"
static enum {
JSON_OFF,
JSON_SHORT,
JSON_PRETTY,
} arg_json = JSON_OFF;
static PagerFlags arg_pager_flags = 0;
static bool arg_legend = true;
static const char *arg_address = NULL;
static bool arg_unique = false;
static bool arg_acquired = false;
static bool arg_activatable = false;
static bool arg_show_machine = false;
static char **arg_matches = NULL;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static const char *arg_host = NULL;
static bool arg_user = false;
static size_t arg_snaplen = 4096;
static bool arg_list = false;
static bool arg_quiet = false;
static bool arg_verbose = false;
static bool arg_xml_interface = false;
static bool arg_expect_reply = true;
static bool arg_auto_start = true;
static bool arg_allow_interactive_authorization = true;
static bool arg_augment_creds = true;
static bool arg_watch_bind = false;
static usec_t arg_timeout = 0;
static const char *arg_destination = NULL;
STATIC_DESTRUCTOR_REGISTER(arg_matches, strv_freep);
#define NAME_IS_ACQUIRED INT_TO_PTR(1)
#define NAME_IS_ACTIVATABLE INT_TO_PTR(2)
static int json_transform_message(sd_bus_message *m, JsonVariant **ret);
static void json_dump_with_flags(JsonVariant *v, FILE *f);
static int acquire_bus(bool set_monitor, sd_bus **ret) {
_cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL;
int r;
r = sd_bus_new(&bus);
if (r < 0)
return log_error_errno(r, "Failed to allocate bus: %m");
if (set_monitor) {
r = sd_bus_set_monitor(bus, true);
if (r < 0)
return log_error_errno(r, "Failed to set monitor mode: %m");
r = sd_bus_negotiate_creds(bus, true, _SD_BUS_CREDS_ALL);
if (r < 0)
return log_error_errno(r, "Failed to enable credentials: %m");
r = sd_bus_negotiate_timestamp(bus, true);
if (r < 0)
return log_error_errno(r, "Failed to enable timestamps: %m");
r = sd_bus_negotiate_fds(bus, true);
if (r < 0)
return log_error_errno(r, "Failed to enable fds: %m");
}
r = sd_bus_set_bus_client(bus, true);
if (r < 0)
return log_error_errno(r, "Failed to set bus client: %m");
r = sd_bus_set_watch_bind(bus, arg_watch_bind);
if (r < 0)
return log_error_errno(r, "Failed to set watch-bind setting to '%s': %m", yes_no(arg_watch_bind));
if (arg_address)
r = sd_bus_set_address(bus, arg_address);
else {
switch (arg_transport) {
case BUS_TRANSPORT_LOCAL:
if (arg_user) {
bus->is_user = true;
r = bus_set_address_user(bus);
} else {
bus->is_system = true;
r = bus_set_address_system(bus);
}
break;
case BUS_TRANSPORT_REMOTE:
r = bus_set_address_system_remote(bus, arg_host);
break;
case BUS_TRANSPORT_MACHINE:
r = bus_set_address_system_machine(bus, arg_host);
break;
default:
assert_not_reached("Hmm, unknown transport type.");
}
}
if (r < 0)
return log_error_errno(r, "Failed to set address: %m");
r = sd_bus_start(bus);
if (r < 0)
return log_error_errno(r, "Failed to connect to bus: %m");
*ret = TAKE_PTR(bus);
return 0;
}
static int list_bus_names(int argc, char **argv, void *userdata) {
_cleanup_strv_free_ char **acquired = NULL, **activatable = NULL;
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_hashmap_free_ Hashmap *names = NULL;
_cleanup_(table_unrefp) Table *table = NULL;
Iterator iterator;
char **i, *k;
void *v;
int r;
enum {
COLUMN_ACTIVATABLE,
COLUMN_NAME,
COLUMN_PID,
COLUMN_PROCESS,
COLUMN_USER,
COLUMN_CONNECTION,
COLUMN_UNIT,
COLUMN_SESSION,
COLUMN_DESCRIPTION,
COLUMN_MACHINE,
};
if (!arg_unique && !arg_acquired && !arg_activatable)
arg_unique = arg_acquired = arg_activatable = true;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);
if (r < 0)
return log_error_errno(r, "Failed to list names: %m");
names = hashmap_new(&string_hash_ops);
if (!names)
return log_oom();
STRV_FOREACH(i, acquired) {
r = hashmap_put(names, *i, NAME_IS_ACQUIRED);
if (r < 0)
return log_error_errno(r, "Failed to add to hashmap: %m");
}
STRV_FOREACH(i, activatable) {
r = hashmap_put(names, *i, NAME_IS_ACTIVATABLE);
if (r < 0 && r != -EEXIST)
return log_error_errno(r, "Failed to add to hashmap: %m");
}
table = table_new("activatable", "name", "pid", "process", "user", "connection", "unit", "session", "description", "machine");
if (!table)
return log_oom();
r = table_set_align_percent(table, table_get_cell(table, 0, COLUMN_PID), 100);
if (r < 0)
return log_error_errno(r, "Failed to set alignment: %m");
r = table_set_empty_string(table, "-");
if (r < 0)
return log_error_errno(r, "Failed to set empty string: %m");
r = table_set_sort(table, COLUMN_NAME, (size_t) -1);
if (r < 0)
return log_error_errno(r, "Failed to set sort column: %m");
if (arg_show_machine)
r = table_set_display(table, COLUMN_NAME, COLUMN_PID, COLUMN_PROCESS, COLUMN_USER, COLUMN_CONNECTION, COLUMN_UNIT, COLUMN_SESSION, COLUMN_DESCRIPTION, COLUMN_MACHINE, (size_t) -1);
else
r = table_set_display(table, COLUMN_NAME, COLUMN_PID, COLUMN_PROCESS, COLUMN_USER, COLUMN_CONNECTION, COLUMN_UNIT, COLUMN_SESSION, COLUMN_DESCRIPTION, (size_t) -1);
if (r < 0)
return log_error_errno(r, "Failed to set columns to display: %m");
table_set_header(table, arg_legend);
HASHMAP_FOREACH_KEY(v, k, names, iterator) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
if (v == NAME_IS_ACTIVATABLE) {
r = table_add_many(
table,
TABLE_INT, PTR_TO_INT(v),
TABLE_STRING, k,
TABLE_EMPTY,
TABLE_EMPTY,
TABLE_EMPTY,
TABLE_STRING, "(activatable)", TABLE_SET_COLOR, ansi_grey(),
TABLE_EMPTY,
TABLE_EMPTY,
TABLE_EMPTY,
TABLE_EMPTY);
if (r < 0)
return log_error_errno(r, "Failed to fill line: %m");
continue;
}
assert(v == NAME_IS_ACQUIRED);
if (!arg_unique && k[0] == ':')
continue;
if (!arg_acquired && k[0] != ':')
continue;
r = table_add_many(table,
TABLE_INT, PTR_TO_INT(v),
TABLE_STRING, k);
if (r < 0)
return log_error_errno(r, "Failed to add name %s to table: %m", k);
r = sd_bus_get_name_creds(
bus, k,
(arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) |
SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID|SD_BUS_CREDS_COMM|
SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_SESSION|
SD_BUS_CREDS_DESCRIPTION, &creds);
if (r < 0) {
log_debug_errno(r, "Failed to acquire credentials of service %s, ignoring: %m", k);
r = table_fill_empty(table, COLUMN_MACHINE);
} else {
const char *unique = NULL, *session = NULL, *unit = NULL, *cn = NULL;
pid_t pid;
uid_t uid;
r = sd_bus_creds_get_pid(creds, &pid);
if (r >= 0) {
const char *comm = NULL;
(void) sd_bus_creds_get_comm(creds, &comm);
r = table_add_many(table,
TABLE_PID, pid,
TABLE_STRING, strna(comm));
} else
r = table_add_many(table, TABLE_EMPTY, TABLE_EMPTY);
if (r < 0)
return log_error_errno(r, "Failed to add fields to table: %m");
r = sd_bus_creds_get_euid(creds, &uid);
if (r >= 0) {
_cleanup_free_ char *u = NULL;
u = uid_to_name(uid);
if (!u)
return log_oom();
r = table_add_cell(table, NULL, TABLE_STRING, u);
} else
r = table_add_cell(table, NULL, TABLE_EMPTY, NULL);
if (r < 0)
return log_error_errno(r, "Failed to add field to table: %m");
(void) sd_bus_creds_get_unique_name(creds, &unique);
(void) sd_bus_creds_get_unit(creds, &unit);
(void) sd_bus_creds_get_session(creds, &session);
(void) sd_bus_creds_get_description(creds, &cn);
r = table_add_many(
table,
TABLE_STRING, unique,
TABLE_STRING, unit,
TABLE_STRING, session,
TABLE_STRING, cn);
}
if (r < 0)
return log_error_errno(r, "Failed to add fields to table: %m");
if (arg_show_machine) {
sd_id128_t mid;
r = sd_bus_get_name_machine_id(bus, k, &mid);
if (r < 0)
log_debug_errno(r, "Failed to acquire credentials of service %s, ignoring: %m", k);
else {
char m[SD_ID128_STRING_MAX];
r = table_add_cell(table, NULL, TABLE_STRING, sd_id128_to_string(mid, m));
if (r < 0)
return log_error_errno(r, "Failed to add field to table: %m");
continue; /* line fully filled, no need to fill the remainder below */
}
}
r = table_fill_empty(table, 0);
if (r < 0)
return log_error_errno(r, "Failed to fill line: %m");
}
if (IN_SET(arg_json, JSON_OFF, JSON_PRETTY))
(void) pager_open(arg_pager_flags);
if (arg_json)
r = table_print_json(table, stdout, (arg_json == JSON_PRETTY ? JSON_FORMAT_PRETTY : JSON_FORMAT_NEWLINE) | JSON_FORMAT_COLOR_AUTO);
else
r = table_print(table, stdout);
if (r < 0)
return log_error_errno(r, "Failed to show table: %m");
return 0;
}
static void print_subtree(const char *prefix, const char *path, char **l) {
const char *vertical, *space;
char **n;
/* We assume the list is sorted. Let's first skip over the
* entry we are looking at. */
for (;;) {
if (!*l)
return;
if (!streq(*l, path))
break;
l++;
}
vertical = strjoina(prefix, special_glyph(SPECIAL_GLYPH_TREE_VERTICAL));
space = strjoina(prefix, special_glyph(SPECIAL_GLYPH_TREE_SPACE));
for (;;) {
bool has_more = false;
if (!*l || !path_startswith(*l, path))
break;
n = l + 1;
for (;;) {
if (!*n || !path_startswith(*n, path))
break;
if (!path_startswith(*n, *l)) {
has_more = true;
break;
}
n++;
}
printf("%s%s%s\n", prefix, special_glyph(has_more ? SPECIAL_GLYPH_TREE_BRANCH : SPECIAL_GLYPH_TREE_RIGHT), *l);
print_subtree(has_more ? vertical : space, *l, l);
l = n;
}
}
static void print_tree(const char *prefix, char **l) {
prefix = strempty(prefix);
if (arg_list) {
char **i;
STRV_FOREACH(i, l)
printf("%s%s\n", prefix, *i);
return;
}
if (strv_isempty(l)) {
printf("No objects discovered.\n");
return;
}
if (streq(l[0], "/") && !l[1]) {
printf("Only root object discovered.\n");
return;
}
print_subtree(prefix, "/", l);
}
static int on_path(const char *path, void *userdata) {
Set *paths = userdata;
int r;
assert(paths);
r = set_put_strdup(paths, path);
if (r < 0)
return log_oom();
return 0;
}
static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *paths, bool many) {
static const XMLIntrospectOps ops = {
.on_path = on_path,
};
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
const char *xml;
int r;
r = sd_bus_call_method(bus, service, path, "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
if (r < 0) {
if (many)
printf("Failed to introspect object %s of service %s: %s\n", path, service, bus_error_message(&error, r));
else
log_error_errno(r, "Failed to introspect object %s of service %s: %s", path, service, bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "s", &xml);
if (r < 0)
return bus_log_parse_error(r);
return parse_xml_introspect(path, xml, &ops, paths);
}
static int tree_one(sd_bus *bus, const char *service, const char *prefix, bool many) {
_cleanup_set_free_free_ Set *paths = NULL, *done = NULL, *failed = NULL;
_cleanup_free_ char **l = NULL;
char *m;
int r;
paths = set_new(&string_hash_ops);
if (!paths)
return log_oom();
done = set_new(&string_hash_ops);
if (!done)
return log_oom();
failed = set_new(&string_hash_ops);
if (!failed)
return log_oom();
m = strdup("/");
if (!m)
return log_oom();
r = set_put(paths, m);
if (r < 0) {
free(m);
return log_oom();
}
for (;;) {
_cleanup_free_ char *p = NULL;
int q;
p = set_steal_first(paths);
if (!p)
break;
if (set_contains(done, p) ||
set_contains(failed, p))
continue;
q = find_nodes(bus, service, p, paths, many);
if (q < 0) {
if (r >= 0)
r = q;
q = set_put(failed, p);
} else
q = set_put(done, p);
if (q < 0)
return log_oom();
assert(q != 0);
p = NULL;
}
(void) pager_open(arg_pager_flags);
l = set_get_strv(done);
if (!l)
return log_oom();
strv_sort(l);
print_tree(prefix, l);
fflush(stdout);
return r;
}
static int tree(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
char **i;
int r = 0;
if (!arg_unique && !arg_acquired)
arg_acquired = true;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
if (argc <= 1) {
_cleanup_strv_free_ char **names = NULL;
bool not_first = false;
r = sd_bus_list_names(bus, &names, NULL);
if (r < 0)
return log_error_errno(r, "Failed to get name list: %m");
(void) pager_open(arg_pager_flags);
STRV_FOREACH(i, names) {
int q;
if (!arg_unique && (*i)[0] == ':')
continue;
if (!arg_acquired && (*i)[0] == ':')
continue;
if (not_first)
printf("\n");
printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_normal());
q = tree_one(bus, *i, NULL, true);
if (q < 0 && r >= 0)
r = q;
not_first = true;
}
} else {
STRV_FOREACH(i, argv+1) {
int q;
if (i > argv+1)
printf("\n");
if (argv[2]) {
(void) pager_open(arg_pager_flags);
printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_normal());
}
q = tree_one(bus, *i, NULL, !!argv[2]);
if (q < 0 && r >= 0)
r = q;
}
}
return r;
}
static int format_cmdline(sd_bus_message *m, FILE *f, bool needs_space) {
int r;
for (;;) {
const char *contents = NULL;
char type;
union {
uint8_t u8;
uint16_t u16;
int16_t s16;
uint32_t u32;
int32_t s32;
uint64_t u64;
int64_t s64;
double d64;
const char *string;
int i;
} basic;
r = sd_bus_message_peek_type(m, &type, &contents);
if (r < 0)
return r;
if (r == 0)
return needs_space;
if (bus_type_is_container(type) > 0) {
r = sd_bus_message_enter_container(m, type, contents);
if (r < 0)
return r;
if (type == SD_BUS_TYPE_ARRAY) {
unsigned n = 0;
/* count array entries */
for (;;) {
r = sd_bus_message_skip(m, contents);
if (r < 0)
return r;
if (r == 0)
break;
n++;
}
r = sd_bus_message_rewind(m, false);
if (r < 0)
return r;
if (needs_space)
fputc(' ', f);
fprintf(f, "%u", n);
needs_space = true;
} else if (type == SD_BUS_TYPE_VARIANT) {
if (needs_space)
fputc(' ', f);
fprintf(f, "%s", contents);
needs_space = true;
}
r = format_cmdline(m, f, needs_space);
if (r < 0)
return r;
needs_space = r > 0;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
continue;
}
r = sd_bus_message_read_basic(m, type, &basic);
if (r < 0)
return r;
if (needs_space)
fputc(' ', f);
switch (type) {
case SD_BUS_TYPE_BYTE:
fprintf(f, "%u", basic.u8);
break;
case SD_BUS_TYPE_BOOLEAN:
fputs(true_false(basic.i), f);
break;
case SD_BUS_TYPE_INT16:
fprintf(f, "%i", basic.s16);
break;
case SD_BUS_TYPE_UINT16:
fprintf(f, "%u", basic.u16);
break;
case SD_BUS_TYPE_INT32:
fprintf(f, "%i", basic.s32);
break;
case SD_BUS_TYPE_UINT32:
fprintf(f, "%u", basic.u32);
break;
case SD_BUS_TYPE_INT64:
fprintf(f, "%" PRIi64, basic.s64);
break;
case SD_BUS_TYPE_UINT64:
fprintf(f, "%" PRIu64, basic.u64);
break;
case SD_BUS_TYPE_DOUBLE:
fprintf(f, "%g", basic.d64);
break;
case SD_BUS_TYPE_STRING:
case SD_BUS_TYPE_OBJECT_PATH:
case SD_BUS_TYPE_SIGNATURE: {
_cleanup_free_ char *b = NULL;
b = cescape(basic.string);
if (!b)
return -ENOMEM;
fprintf(f, "\"%s\"", b);
break;
}
case SD_BUS_TYPE_UNIX_FD:
fprintf(f, "%i", basic.i);
break;
default:
assert_not_reached("Unknown basic type.");
}
needs_space = true;
}
}
typedef struct Member {
const char *type;
char *interface;
char *name;
char *signature;
char *result;
char *value;
bool writable;
uint64_t flags;
} Member;
static void member_hash_func(const Member *m, struct siphash *state) {
uint64_t arity = 1;
assert(m);
assert(m->type);
string_hash_func(m->type, state);
arity += !!m->name + !!m->interface;
uint64_hash_func(&arity, state);
if (m->name)
string_hash_func(m->name, state);
if (m->interface)
string_hash_func(m->interface, state);
}
static int member_compare_func(const Member *x, const Member *y) {
int d;
assert(x);
assert(y);
assert(x->type);
assert(y->type);
d = strcmp_ptr(x->interface, y->interface);
if (d != 0)
return d;
d = strcmp(x->type, y->type);
if (d != 0)
return d;
return strcmp_ptr(x->name, y->name);
}
static int member_compare_funcp(Member * const *a, Member * const *b) {
return member_compare_func(*a, *b);
}
static void member_free(Member *m) {
if (!m)
return;
free(m->interface);
free(m->name);
free(m->signature);
free(m->result);
free(m->value);
free(m);
}
DEFINE_TRIVIAL_CLEANUP_FUNC(Member*, member_free);
static void member_set_free(Set *s) {
set_free_with_destructor(s, member_free);
}
DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, member_set_free);
static int on_interface(const char *interface, uint64_t flags, void *userdata) {
_cleanup_(member_freep) Member *m;
Set *members = userdata;
int r;
assert(interface);
assert(members);
m = new0(Member, 1);
if (!m)
return log_oom();
m->type = "interface";
m->flags = flags;
r = free_and_strdup(&m->interface, interface);
if (r < 0)
return log_oom();
r = set_put(members, m);
if (r <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Duplicate interface");
m = NULL;
return 0;
}
static int on_method(const char *interface, const char *name, const char *signature, const char *result, uint64_t flags, void *userdata) {
_cleanup_(member_freep) Member *m;
Set *members = userdata;
int r;
assert(interface);
assert(name);
m = new0(Member, 1);
if (!m)
return log_oom();
m->type = "method";
m->flags = flags;
r = free_and_strdup(&m->interface, interface);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->name, name);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->signature, signature);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->result, result);
if (r < 0)
return log_oom();
r = set_put(members, m);
if (r <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Duplicate method");
m = NULL;
return 0;
}
static int on_signal(const char *interface, const char *name, const char *signature, uint64_t flags, void *userdata) {
_cleanup_(member_freep) Member *m;
Set *members = userdata;
int r;
assert(interface);
assert(name);
m = new0(Member, 1);
if (!m)
return log_oom();
m->type = "signal";
m->flags = flags;
r = free_and_strdup(&m->interface, interface);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->name, name);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->signature, signature);
if (r < 0)
return log_oom();
r = set_put(members, m);
if (r <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Duplicate signal");
m = NULL;
return 0;
}
static int on_property(const char *interface, const char *name, const char *signature, bool writable, uint64_t flags, void *userdata) {
_cleanup_(member_freep) Member *m;
Set *members = userdata;
int r;
assert(interface);
assert(name);
m = new0(Member, 1);
if (!m)
return log_oom();
m->type = "property";
m->flags = flags;
m->writable = writable;
r = free_and_strdup(&m->interface, interface);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->name, name);
if (r < 0)
return log_oom();
r = free_and_strdup(&m->signature, signature);
if (r < 0)
return log_oom();
r = set_put(members, m);
if (r <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Duplicate property");
m = NULL;
return 0;
}
DEFINE_PRIVATE_HASH_OPS(member_hash_ops, Member, member_hash_func, member_compare_func);
static int introspect(int argc, char **argv, void *userdata) {
static const XMLIntrospectOps ops = {
.on_interface = on_interface,
.on_method = on_method,
.on_signal = on_signal,
.on_property = on_property,
};
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_xml = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(member_set_freep) Set *members = NULL;
unsigned name_width, type_width, signature_width, result_width, j, k = 0;
Member *m, **sorted = NULL;
Iterator i;
const char *xml;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
members = set_new(&member_hash_ops);
if (!members)
return log_oom();
r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply_xml, "");
if (r < 0)
return log_error_errno(r, "Failed to introspect object %s of service %s: %s", argv[2], argv[1], bus_error_message(&error, r));
r = sd_bus_message_read(reply_xml, "s", &xml);
if (r < 0)
return bus_log_parse_error(r);
if (arg_xml_interface) {
/* Just dump the received XML and finish */
puts(xml);
return 0;
}
/* First, get list of all properties */
r = parse_xml_introspect(argv[2], xml, &ops, members);
if (r < 0)
return r;
/* Second, find the current values for them */
SET_FOREACH(m, members, i) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
if (!streq(m->type, "property"))
continue;
if (m->value)
continue;
if (argv[3] && !streq(argv[3], m->interface))
continue;
r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", m->interface);
if (r < 0)
return log_error_errno(r, "Failed to get all properties on interface %s: %s",
m->interface, bus_error_message(&error, r));
r = sd_bus_message_enter_container(reply, 'a', "{sv}");
if (r < 0)
return bus_log_parse_error(r);
for (;;) {
Member *z;
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *mf = NULL;
size_t sz = 0;
const char *name;
r = sd_bus_message_enter_container(reply, 'e', "sv");
if (r < 0)
return bus_log_parse_error(r);
if (r == 0)
break;
r = sd_bus_message_read(reply, "s", &name);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_enter_container(reply, 'v', NULL);
if (r < 0)
return bus_log_parse_error(r);
mf = open_memstream_unlocked(&buf, &sz);
if (!mf)
return log_oom();
r = format_cmdline(reply, mf, false);
if (r < 0)
return bus_log_parse_error(r);
mf = safe_fclose(mf);
z = set_get(members, &((Member) {
.type = "property",
.interface = m->interface,
.name = (char*) name }));
if (z)
free_and_replace(z->value, buf);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
}
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
}
(void) pager_open(arg_pager_flags);
name_width = STRLEN("NAME");
type_width = STRLEN("TYPE");
signature_width = STRLEN("SIGNATURE");
result_width = STRLEN("RESULT/VALUE");
sorted = newa(Member*, set_size(members));
SET_FOREACH(m, members, i) {
if (argv[3] && !streq(argv[3], m->interface))
continue;
if (m->interface)
name_width = MAX(name_width, strlen(m->interface));
if (m->name)
name_width = MAX(name_width, strlen(m->name) + 1);
if (m->type)
type_width = MAX(type_width, strlen(m->type));
if (m->signature)
signature_width = MAX(signature_width, strlen(m->signature));
if (m->result)
result_width = MAX(result_width, strlen(m->result));
if (m->value)
result_width = MAX(result_width, strlen(m->value));
sorted[k++] = m;
}
if (result_width > 40)
result_width = 40;
typesafe_qsort(sorted, k, member_compare_funcp);
if (arg_legend) {
printf("%-*s %-*s %-*s %-*s %s\n",
(int) name_width, "NAME",
(int) type_width, "TYPE",
(int) signature_width, "SIGNATURE",
(int) result_width, "RESULT/VALUE",
"FLAGS");
}
for (j = 0; j < k; j++) {
_cleanup_free_ char *ellipsized = NULL;
const char *rv;
bool is_interface;
m = sorted[j];
if (argv[3] && !streq(argv[3], m->interface))
continue;
is_interface = streq(m->type, "interface");
if (argv[3] && is_interface)
continue;
if (m->value) {
ellipsized = ellipsize(m->value, result_width, 100);
if (!ellipsized)
return log_oom();
rv = ellipsized;
} else
rv = empty_to_dash(m->result);
printf("%s%s%-*s%s %-*s %-*s %-*s%s%s%s%s%s%s\n",
is_interface ? ansi_highlight() : "",
is_interface ? "" : ".",
- !is_interface + (int) name_width, empty_to_dash(streq_ptr(m->type, "interface") ? m->interface : m->name),
is_interface ? ansi_normal() : "",
(int) type_width, empty_to_dash(m->type),
(int) signature_width, empty_to_dash(m->signature),
(int) result_width, rv,
(m->flags & SD_BUS_VTABLE_DEPRECATED) ? " deprecated" : (m->flags || m->writable ? "" : " -"),
(m->flags & SD_BUS_VTABLE_METHOD_NO_REPLY) ? " no-reply" : "",
(m->flags & SD_BUS_VTABLE_PROPERTY_CONST) ? " const" : "",
(m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) ? " emits-change" : "",
(m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) ? " emits-invalidation" : "",
m->writable ? " writable" : "");
}
return 0;
}
static int message_dump(sd_bus_message *m, FILE *f) {
return bus_message_dump(m, f, BUS_MESSAGE_DUMP_WITH_HEADER);
}
static int message_pcap(sd_bus_message *m, FILE *f) {
return bus_message_pcap_frame(m, arg_snaplen, f);
}
static int message_json(sd_bus_message *m, FILE *f) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL;
char e[2];
int r;
r = json_transform_message(m, &v);
if (r < 0)
return r;
e[0] = m->header->endian;
e[1] = 0;
r = json_build(&w, JSON_BUILD_OBJECT(
JSON_BUILD_PAIR("type", JSON_BUILD_STRING(bus_message_type_to_string(m->header->type))),
JSON_BUILD_PAIR("endian", JSON_BUILD_STRING(e)),
JSON_BUILD_PAIR("flags", JSON_BUILD_INTEGER(m->header->flags)),
JSON_BUILD_PAIR("version", JSON_BUILD_INTEGER(m->header->version)),
JSON_BUILD_PAIR_CONDITION(m->priority != 0, "priority", JSON_BUILD_INTEGER(m->priority)),
JSON_BUILD_PAIR("cookie", JSON_BUILD_INTEGER(BUS_MESSAGE_COOKIE(m))),
JSON_BUILD_PAIR_CONDITION(m->reply_cookie != 0, "reply_cookie", JSON_BUILD_INTEGER(m->reply_cookie)),
JSON_BUILD_PAIR_CONDITION(m->sender, "sender", JSON_BUILD_STRING(m->sender)),
JSON_BUILD_PAIR_CONDITION(m->destination, "destination", JSON_BUILD_STRING(m->destination)),
JSON_BUILD_PAIR_CONDITION(m->path, "path", JSON_BUILD_STRING(m->path)),
JSON_BUILD_PAIR_CONDITION(m->interface, "interface", JSON_BUILD_STRING(m->interface)),
JSON_BUILD_PAIR_CONDITION(m->member, "member", JSON_BUILD_STRING(m->member)),
JSON_BUILD_PAIR_CONDITION(m->monotonic != 0, "monotonic", JSON_BUILD_INTEGER(m->monotonic)),
JSON_BUILD_PAIR_CONDITION(m->realtime != 0, "realtime", JSON_BUILD_INTEGER(m->realtime)),
JSON_BUILD_PAIR_CONDITION(m->seqnum != 0, "seqnum", JSON_BUILD_INTEGER(m->seqnum)),
JSON_BUILD_PAIR_CONDITION(m->error.name, "error_name", JSON_BUILD_STRING(m->error.name)),
JSON_BUILD_PAIR("payload", JSON_BUILD_VARIANT(v))));
if (r < 0)
return log_error_errno(r, "Failed to build JSON object: %m");
json_dump_with_flags(w, f);
return 0;
}
static int monitor(int argc, char **argv, int (*dump)(sd_bus_message *m, FILE *f)) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char **i;
uint32_t flags = 0;
const char *unique_name;
bool is_monitor = false;
int r;
r = acquire_bus(true, &bus);
if (r < 0)
return r;
/* upgrade connection; it's not used for anything else after this call */
r = sd_bus_message_new_method_call(bus,
&message,
"org.freedesktop.DBus",
"/org/freedesktop/DBus",
"org.freedesktop.DBus.Monitoring",
"BecomeMonitor");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_open_container(message, 'a', "s");
if (r < 0)
return bus_log_create_error(r);
STRV_FOREACH(i, argv+1) {
_cleanup_free_ char *m = NULL;
if (!service_name_is_valid(*i))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid service name '%s'", *i);
m = strjoin("sender='", *i, "'");
if (!m)
return log_oom();
r = sd_bus_message_append_basic(message, 's', m);
if (r < 0)
return bus_log_create_error(r);
free(m);
m = strjoin("destination='", *i, "'");
if (!m)
return log_oom();
r = sd_bus_message_append_basic(message, 's', m);
if (r < 0)
return bus_log_create_error(r);
}
STRV_FOREACH(i, arg_matches) {
r = sd_bus_message_append_basic(message, 's', *i);
if (r < 0)
return bus_log_create_error(r);
}
r = sd_bus_message_close_container(message);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_basic(message, 'u', &flags);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, message, arg_timeout, &error, NULL);
if (r < 0)
return log_error_errno(r, "Call to org.freedesktop.DBus.Monitoring.BecomeMonitor failed: %s",
bus_error_message(&error, r));
r = sd_bus_get_unique_name(bus, &unique_name);
if (r < 0)
return log_error_errno(r, "Failed to get unique name: %m");
log_info("Monitoring bus message stream.");
for (;;) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
r = sd_bus_process(bus, &m);
if (r < 0)
return log_error_errno(r, "Failed to process bus: %m");
if (!is_monitor) {
const char *name;
/* wait until we lose our unique name */
if (sd_bus_message_is_signal(m, "org.freedesktop.DBus", "NameLost") <= 0)
continue;
r = sd_bus_message_read(m, "s", &name);
if (r < 0)
return log_error_errno(r, "Failed to read lost name: %m");
if (streq(name, unique_name))
is_monitor = true;
continue;
}
if (m) {
dump(m, stdout);
fflush(stdout);
if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected") > 0) {
log_info("Connection terminated, exiting.");
return 0;
}
continue;
}
if (r > 0)
continue;
r = sd_bus_wait(bus, (uint64_t) -1);
if (r < 0)
return log_error_errno(r, "Failed to wait for bus: %m");
}
}
static int verb_monitor(int argc, char **argv, void *userdata) {
return monitor(argc, argv, arg_json != JSON_OFF ? message_json : message_dump);
}
static int verb_capture(int argc, char **argv, void *userdata) {
int r;
if (isatty(fileno(stdout)) > 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Refusing to write message data to console, please redirect output to a file.");
bus_pcap_header(arg_snaplen, stdout);
r = monitor(argc, argv, message_pcap);
if (r < 0)
return r;
r = fflush_and_check(stdout);
if (r < 0)
return log_error_errno(r, "Couldn't write capture file: %m");
return r;
}
static int status(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
pid_t pid;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
if (!isempty(argv[1])) {
r = parse_pid(argv[1], &pid);
if (r < 0)
r = sd_bus_get_name_creds(
bus,
argv[1],
(arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL,
&creds);
else
r = sd_bus_creds_new_from_pid(
&creds,
pid,
_SD_BUS_CREDS_ALL);
} else {
const char *scope, *address;
sd_id128_t bus_id;
r = sd_bus_get_address(bus, &address);
if (r >= 0)
printf("BusAddress=%s%s%s\n", ansi_highlight(), address, ansi_normal());
r = sd_bus_get_scope(bus, &scope);
if (r >= 0)
printf("BusScope=%s%s%s\n", ansi_highlight(), scope, ansi_normal());
r = sd_bus_get_bus_id(bus, &bus_id);
if (r >= 0)
printf("BusID=%s" SD_ID128_FORMAT_STR "%s\n", ansi_highlight(), SD_ID128_FORMAT_VAL(bus_id), ansi_normal());
r = sd_bus_get_owner_creds(
bus,
(arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL,
&creds);
}
if (r < 0)
return log_error_errno(r, "Failed to get credentials: %m");
bus_creds_dump(creds, NULL, false);
return 0;
}
static int message_append_cmdline(sd_bus_message *m, const char *signature, char ***x) {
char **p;
int r;
assert(m);
assert(signature);
assert(x);
p = *x;
for (;;) {
const char *v;
char t;
t = *signature;
v = *p;
if (t == 0)
break;
if (!v)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Too few parameters for signature.");
signature++;
p++;
switch (t) {
case SD_BUS_TYPE_BOOLEAN:
r = parse_boolean(v);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as boolean: %m", v);
r = sd_bus_message_append_basic(m, t, &r);
break;
case SD_BUS_TYPE_BYTE: {
uint8_t z;
r = safe_atou8(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as byte (unsigned 8bit integer): %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_INT16: {
int16_t z;
r = safe_atoi16(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as signed 16bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_UINT16: {
uint16_t z;
r = safe_atou16(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as unsigned 16bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_INT32: {
int32_t z;
r = safe_atoi32(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as signed 32bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_UINT32: {
uint32_t z;
r = safe_atou32(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as unsigned 32bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_INT64: {
int64_t z;
r = safe_atoi64(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as signed 64bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_UINT64: {
uint64_t z;
r = safe_atou64(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as unsigned 64bit integer: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_DOUBLE: {
double z;
r = safe_atod(v, &z);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' as double precision floating point: %m", v);
r = sd_bus_message_append_basic(m, t, &z);
break;
}
case SD_BUS_TYPE_STRING:
case SD_BUS_TYPE_OBJECT_PATH:
case SD_BUS_TYPE_SIGNATURE:
r = sd_bus_message_append_basic(m, t, v);
break;
case SD_BUS_TYPE_ARRAY: {
uint32_t n;
size_t k;
r = safe_atou32(v, &n);
if (r < 0)
return log_error_errno(r, "Failed to parse '%s' number of array entries: %m", v);
r = signature_element_length(signature, &k);
if (r < 0)
return log_error_errno(r, "Invalid array signature: %m");
{
unsigned i;
char s[k + 1];
memcpy(s, signature, k);
s[k] = 0;
r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, s);
if (r < 0)
return bus_log_create_error(r);
for (i = 0; i < n; i++) {
r = message_append_cmdline(m, s, &p);
if (r < 0)
return r;
}
}
signature += k;
r = sd_bus_message_close_container(m);
break;
}
case SD_BUS_TYPE_VARIANT:
r = sd_bus_message_open_container(m, SD_BUS_TYPE_VARIANT, v);
if (r < 0)
return bus_log_create_error(r);
r = message_append_cmdline(m, v, &p);
if (r < 0)
return r;
r = sd_bus_message_close_container(m);
break;
case SD_BUS_TYPE_STRUCT_BEGIN:
case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
size_t k;
signature--;
p--;
r = signature_element_length(signature, &k);
if (r < 0)
return log_error_errno(r, "Invalid struct/dict entry signature: %m");
{
char s[k-1];
memcpy(s, signature + 1, k - 2);
s[k - 2] = 0;
r = sd_bus_message_open_container(m, t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
if (r < 0)
return bus_log_create_error(r);
r = message_append_cmdline(m, s, &p);
if (r < 0)
return r;
}
signature += k;
r = sd_bus_message_close_container(m);
break;
}
case SD_BUS_TYPE_UNIX_FD:
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"UNIX file descriptor not supported as type.");
default:
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown signature type %c.", t);
}
if (r < 0)
return bus_log_create_error(r);
}
*x = p;
return 0;
}
static int json_transform_one(sd_bus_message *m, JsonVariant **ret);
static int json_transform_array_or_struct(sd_bus_message *m, JsonVariant **ret) {
size_t n_elements = 0, n_allocated = 0;
JsonVariant **elements = NULL;
int r;
assert(m);
assert(ret);
for (;;) {
r = sd_bus_message_at_end(m, false);
if (r < 0) {
bus_log_parse_error(r);
goto finish;
}
if (r > 0)
break;
if (!GREEDY_REALLOC(elements, n_allocated, n_elements + 1)) {
r = log_oom();
goto finish;
}
r = json_transform_one(m, elements + n_elements);
if (r < 0)
goto finish;
n_elements++;
}
r = json_variant_new_array(ret, elements, n_elements);
finish:
json_variant_unref_many(elements, n_elements);
free(elements);
return r;
}
static int json_transform_variant(sd_bus_message *m, const char *contents, JsonVariant **ret) {
_cleanup_(json_variant_unrefp) JsonVariant *value = NULL;
int r;
assert(m);
assert(contents);
assert(ret);
r = json_transform_one(m, &value);
if (r < 0)
return r;
r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("type", JSON_BUILD_STRING(contents)),
JSON_BUILD_PAIR("data", JSON_BUILD_VARIANT(value))));
if (r < 0)
return log_oom();
return r;
}
static int json_transform_dict_array(sd_bus_message *m, JsonVariant **ret) {
size_t n_elements = 0, n_allocated = 0;
JsonVariant **elements = NULL;
int r;
assert(m);
assert(ret);
for (;;) {
const char *contents;
char type;
r = sd_bus_message_at_end(m, false);
if (r < 0) {
bus_log_parse_error(r);
goto finish;
}
if (r > 0)
break;
r = sd_bus_message_peek_type(m, &type, &contents);
if (r < 0)
return r;
assert(type == 'e');
if (!GREEDY_REALLOC(elements, n_allocated, n_elements + 2)) {
r = log_oom();
goto finish;
}
r = sd_bus_message_enter_container(m, type, contents);
if (r < 0) {
bus_log_parse_error(r);
goto finish;
}
r = json_transform_one(m, elements + n_elements);
if (r < 0)
goto finish;
n_elements++;
r = json_transform_one(m, elements + n_elements);
if (r < 0)
goto finish;
n_elements++;
r = sd_bus_message_exit_container(m);
if (r < 0) {
bus_log_parse_error(r);
goto finish;
}
}
r = json_variant_new_object(ret, elements, n_elements);
finish:
json_variant_unref_many(elements, n_elements);
free(elements);
return r;
}
static int json_transform_one(sd_bus_message *m, JsonVariant **ret) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
const char *contents;
char type;
int r;
assert(m);
assert(ret);
r = sd_bus_message_peek_type(m, &type, &contents);
if (r < 0)
return bus_log_parse_error(r);
switch (type) {
case SD_BUS_TYPE_BYTE: {
uint8_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_unsigned(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform byte: %m");
break;
}
case SD_BUS_TYPE_BOOLEAN: {
int b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_boolean(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform boolean: %m");
break;
}
case SD_BUS_TYPE_INT16: {
int16_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_integer(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform int16: %m");
break;
}
case SD_BUS_TYPE_UINT16: {
uint16_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_unsigned(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform uint16: %m");
break;
}
case SD_BUS_TYPE_INT32: {
int32_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_integer(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform int32: %m");
break;
}
case SD_BUS_TYPE_UINT32: {
uint32_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_unsigned(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform uint32: %m");
break;
}
case SD_BUS_TYPE_INT64: {
int64_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_integer(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform int64: %m");
break;
}
case SD_BUS_TYPE_UINT64: {
uint64_t b;
r = sd_bus_message_read_basic(m, type, &b);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_unsigned(&v, b);
if (r < 0)
return log_error_errno(r, "Failed to transform uint64: %m");
break;
}
case SD_BUS_TYPE_DOUBLE: {
double d;
r = sd_bus_message_read_basic(m, type, &d);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_real(&v, d);
if (r < 0)
return log_error_errno(r, "Failed to transform double: %m");
break;
}
case SD_BUS_TYPE_STRING:
case SD_BUS_TYPE_OBJECT_PATH:
case SD_BUS_TYPE_SIGNATURE: {
const char *s;
r = sd_bus_message_read_basic(m, type, &s);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_string(&v, s);
if (r < 0)
return log_error_errno(r, "Failed to transform double: %m");
break;
}
case SD_BUS_TYPE_UNIX_FD:
r = sd_bus_message_read_basic(m, type, NULL);
if (r < 0)
return bus_log_parse_error(r);
r = json_variant_new_null(&v);
if (r < 0)
return log_error_errno(r, "Failed to transform fd: %m");
break;
case SD_BUS_TYPE_ARRAY:
case SD_BUS_TYPE_VARIANT:
case SD_BUS_TYPE_STRUCT:
r = sd_bus_message_enter_container(m, type, contents);
if (r < 0)
return bus_log_parse_error(r);
if (type == SD_BUS_TYPE_VARIANT)
r = json_transform_variant(m, contents, &v);
else if (type == SD_BUS_TYPE_ARRAY && contents[0] == '{')
r = json_transform_dict_array(m, &v);
else
r = json_transform_array_or_struct(m, &v);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return bus_log_parse_error(r);
break;
default:
assert_not_reached("Unexpected element type");
}
*ret = TAKE_PTR(v);
return 0;
}
static int json_transform_message(sd_bus_message *m, JsonVariant **ret) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
const char *type;
int r;
assert(m);
assert(ret);
assert_se(type = sd_bus_message_get_signature(m, false));
r = json_transform_array_or_struct(m, &v);
if (r < 0)
return r;
r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("type", JSON_BUILD_STRING(type)),
JSON_BUILD_PAIR("data", JSON_BUILD_VARIANT(v))));
if (r < 0)
return log_oom();
return 0;
}
static void json_dump_with_flags(JsonVariant *v, FILE *f) {
json_variant_dump(v,
(arg_json == JSON_PRETTY ? JSON_FORMAT_PRETTY : JSON_FORMAT_NEWLINE) |
JSON_FORMAT_COLOR_AUTO,
f, NULL);
}
static int call(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], argv[3], argv[4]);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_set_expect_reply(m, arg_expect_reply);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_set_auto_start(m, arg_auto_start);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_set_allow_interactive_authorization(m, arg_allow_interactive_authorization);
if (r < 0)
return bus_log_create_error(r);
if (!isempty(argv[5])) {
char **p;
p = argv+6;
r = message_append_cmdline(m, argv[5], &p);
if (r < 0)
return r;
if (*p)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Too many parameters for signature.");
}
if (!arg_expect_reply) {
r = sd_bus_send(bus, m, NULL);
if (r < 0)
return log_error_errno(r, "Failed to send message: %m");
return 0;
}
r = sd_bus_call(bus, m, arg_timeout, &error, &reply);
if (r < 0)
return log_error_errno(r, "Call failed: %s", bus_error_message(&error, r));
r = sd_bus_message_is_empty(reply);
if (r < 0)
return bus_log_parse_error(r);
if (r == 0 && !arg_quiet) {
if (arg_json != JSON_OFF) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
if (arg_json != JSON_SHORT)
(void) pager_open(arg_pager_flags);
r = json_transform_message(reply, &v);
if (r < 0)
return r;
json_dump_with_flags(v, stdout);
} else if (arg_verbose) {
(void) pager_open(arg_pager_flags);
r = bus_message_dump(reply, stdout, 0);
if (r < 0)
return r;
} else {
fputs(sd_bus_message_get_signature(reply, true), stdout);
fputc(' ', stdout);
r = format_cmdline(reply, stdout, false);
if (r < 0)
return bus_log_parse_error(r);
fputc('\n', stdout);
}
}
return 0;
}
static int emit_signal(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
r = sd_bus_message_new_signal(bus, &m, argv[1], argv[2], argv[3]);
if (r < 0)
return bus_log_create_error(r);
if (arg_destination) {
r = sd_bus_message_set_destination(m, arg_destination);
if (r < 0)
return bus_log_create_error(r);
}
r = sd_bus_message_set_auto_start(m, arg_auto_start);
if (r < 0)
return bus_log_create_error(r);
if (!isempty(argv[4])) {
char **p;
p = argv+5;
r = message_append_cmdline(m, argv[4], &p);
if (r < 0)
return r;
if (*p)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Too many parameters for signature.");
}
r = sd_bus_send(bus, m, NULL);
if (r < 0)
return log_error_errno(r, "Failed to send signal: %m");
return 0;
}
static int get_property(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char **i;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
STRV_FOREACH(i, argv + 4) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
const char *contents = NULL;
char type;
r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Get", &error, &reply, "ss", argv[3], *i);
if (r < 0)
return log_error_errno(r, "Failed to get property %s on interface %s: %s",
*i, argv[3],
bus_error_message(&error, r));
r = sd_bus_message_peek_type(reply, &type, &contents);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_enter_container(reply, 'v', contents);
if (r < 0)
return bus_log_parse_error(r);
if (arg_json != JSON_OFF) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
if (arg_json != JSON_SHORT)
(void) pager_open(arg_pager_flags);
r = json_transform_variant(reply, contents, &v);
if (r < 0)
return r;
json_dump_with_flags(v, stdout);
} else if (arg_verbose) {
(void) pager_open(arg_pager_flags);
r = bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);
if (r < 0)
return r;
} else {
fputs(contents, stdout);
fputc(' ', stdout);
r = format_cmdline(reply, stdout, false);
if (r < 0)
return bus_log_parse_error(r);
fputc('\n', stdout);
}
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
}
return 0;
}
static int set_property(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char **p;
int r;
r = acquire_bus(false, &bus);
if (r < 0)
return r;
r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Set");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(m, "ss", argv[3], argv[4]);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_open_container(m, 'v', argv[5]);
if (r < 0)
return bus_log_create_error(r);
p = argv + 6;
r = message_append_cmdline(m, argv[5], &p);
if (r < 0)
return r;
r = sd_bus_message_close_container(m);
if (r < 0)
return bus_log_create_error(r);
if (*p)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Too many parameters for signature.");
r = sd_bus_call(bus, m, arg_timeout, &error, NULL);
if (r < 0)
return log_error_errno(r, "Failed to set property %s on interface %s: %s",
argv[4], argv[3],
bus_error_message(&error, r));
return 0;
}
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("busctl", "1", &link);
if (r < 0)
return log_oom();
printf("%s [OPTIONS...] {COMMAND} ...\n\n"
"Introspect the bus.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-legend Do not show the headers and footers\n"
" --system Connect to system bus\n"
" --user Connect to user bus\n"
" -H --host=[USER@]HOST Operate on remote host\n"
" -M --machine=CONTAINER Operate on local container\n"
" --address=ADDRESS Connect to bus specified by address\n"
" --show-machine Show machine ID column in list\n"
" --unique Only show unique names\n"
" --acquired Only show acquired names\n"
" --activatable Only show activatable names\n"
" --match=MATCH Only show matching messages\n"
" --size=SIZE Maximum length of captured packet\n"
" --list Don't show tree, but simple object path list\n"
" -q --quiet Don't show method call reply\n"
" --verbose Show result values in long format\n"
" --json=MODE Output as JSON\n"
" -j Same as --json=pretty on tty, --json=short otherwise\n"
" --expect-reply=BOOL Expect a method call reply\n"
" --auto-start=BOOL Auto-start destination service\n"
" --allow-interactive-authorization=BOOL\n"
" Allow interactive authorization for operation\n"
" --timeout=SECS Maximum time to wait for method call completion\n"
" --augment-creds=BOOL Extend credential data with data read from /proc/$PID\n"
" --watch-bind=BOOL Wait for bus AF_UNIX socket to be bound in the file\n"
" system\n"
" --destination=SERVICE Destination service of a signal\n"
"\nCommands:\n"
" list List bus names\n"
" status [SERVICE] Show bus service, process or bus owner credentials\n"
" monitor [SERVICE...] Show bus traffic\n"
" capture [SERVICE...] Capture bus traffic as pcap\n"
" tree [SERVICE...] Show object tree of service\n"
" introspect SERVICE OBJECT [INTERFACE]\n"
" call SERVICE OBJECT INTERFACE METHOD [SIGNATURE [ARGUMENT...]]\n"
" Call a method\n"
" emit OBJECT INTERFACE SIGNAL [SIGNATURE [ARGUMENT...]]\n"
" Emit a signal\n"
" get-property SERVICE OBJECT INTERFACE PROPERTY...\n"
" Get property value\n"
" set-property SERVICE OBJECT INTERFACE PROPERTY SIGNATURE ARGUMENT...\n"
" Set property value\n"
" help Show this help\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
);
return 0;
}
static int verb_help(int argc, char **argv, void *userdata) {
return help();
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_NO_LEGEND,
ARG_SYSTEM,
ARG_USER,
ARG_ADDRESS,
ARG_MATCH,
ARG_SHOW_MACHINE,
ARG_UNIQUE,
ARG_ACQUIRED,
ARG_ACTIVATABLE,
ARG_SIZE,
ARG_LIST,
ARG_VERBOSE,
ARG_XML_INTERFACE,
ARG_EXPECT_REPLY,
ARG_AUTO_START,
ARG_ALLOW_INTERACTIVE_AUTHORIZATION,
ARG_TIMEOUT,
ARG_AUGMENT_CREDS,
ARG_WATCH_BIND,
ARG_JSON,
ARG_DESTINATION,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
{ "system", no_argument, NULL, ARG_SYSTEM },
{ "user", no_argument, NULL, ARG_USER },
{ "address", required_argument, NULL, ARG_ADDRESS },
{ "show-machine", no_argument, NULL, ARG_SHOW_MACHINE },
{ "unique", no_argument, NULL, ARG_UNIQUE },
{ "acquired", no_argument, NULL, ARG_ACQUIRED },
{ "activatable", no_argument, NULL, ARG_ACTIVATABLE },
{ "match", required_argument, NULL, ARG_MATCH },
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "size", required_argument, NULL, ARG_SIZE },
{ "list", no_argument, NULL, ARG_LIST },
{ "quiet", no_argument, NULL, 'q' },
{ "verbose", no_argument, NULL, ARG_VERBOSE },
{ "xml-interface", no_argument, NULL, ARG_XML_INTERFACE },
{ "expect-reply", required_argument, NULL, ARG_EXPECT_REPLY },
{ "auto-start", required_argument, NULL, ARG_AUTO_START },
{ "allow-interactive-authorization", required_argument, NULL, ARG_ALLOW_INTERACTIVE_AUTHORIZATION },
{ "timeout", required_argument, NULL, ARG_TIMEOUT },
{ "augment-creds", required_argument, NULL, ARG_AUGMENT_CREDS },
{ "watch-bind", required_argument, NULL, ARG_WATCH_BIND },
{ "json", required_argument, NULL, ARG_JSON },
{ "destination", required_argument, NULL, ARG_DESTINATION },
{},
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hH:M:qj", options, NULL)) >= 0)
switch (c) {
case 'h':
return help();
case ARG_VERSION:
return version();
case ARG_NO_PAGER:
arg_pager_flags |= PAGER_DISABLE;
break;
case ARG_NO_LEGEND:
arg_legend = false;
break;
case ARG_USER:
arg_user = true;
break;
case ARG_SYSTEM:
arg_user = false;
break;
case ARG_ADDRESS:
arg_address = optarg;
break;
case ARG_SHOW_MACHINE:
arg_show_machine = true;
break;
case ARG_UNIQUE:
arg_unique = true;
break;
case ARG_ACQUIRED:
arg_acquired = true;
break;
case ARG_ACTIVATABLE:
arg_activatable = true;
break;
case ARG_MATCH:
if (strv_extend(&arg_matches, optarg) < 0)
return log_oom();
break;
case ARG_SIZE: {
uint64_t sz;
r = parse_size(optarg, 1024, &sz);
if (r < 0)
return log_error_errno(r, "Failed to parse size '%s': %m", optarg);
if ((uint64_t) (size_t) sz != sz)
return log_error_errno(SYNTHETIC_ERRNO(E2BIG),
"Size out of range.");
arg_snaplen = (size_t) sz;
break;
}
case ARG_LIST:
arg_list = true;
break;
case 'H':
arg_transport = BUS_TRANSPORT_REMOTE;
arg_host = optarg;
break;
case 'M':
arg_transport = BUS_TRANSPORT_MACHINE;
arg_host = optarg;
break;
case 'q':
arg_quiet = true;
break;
case ARG_VERBOSE:
arg_verbose = true;
break;
case ARG_XML_INTERFACE:
arg_xml_interface = true;
break;
case ARG_EXPECT_REPLY:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --expect-reply= parameter '%s': %m", optarg);
arg_expect_reply = r;
break;
case ARG_AUTO_START:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --auto-start= parameter '%s': %m", optarg);
arg_auto_start = r;
break;
case ARG_ALLOW_INTERACTIVE_AUTHORIZATION:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --allow-interactive-authorization= parameter '%s': %m", optarg);
arg_allow_interactive_authorization = r;
break;
case ARG_TIMEOUT:
r = parse_sec(optarg, &arg_timeout);
if (r < 0)
return log_error_errno(r, "Failed to parse --timeout= parameter '%s': %m", optarg);
break;
case ARG_AUGMENT_CREDS:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --augment-creds= parameter '%s': %m", optarg);
arg_augment_creds = r;
break;
case ARG_WATCH_BIND:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --watch-bind= parameter '%s': %m", optarg);
arg_watch_bind = r;
break;
case 'j':
if (on_tty())
arg_json = JSON_PRETTY;
else
arg_json = JSON_SHORT;
break;
case ARG_JSON:
if (streq(optarg, "short"))
arg_json = JSON_SHORT;
else if (streq(optarg, "pretty"))
arg_json = JSON_PRETTY;
else if (streq(optarg, "help")) {
fputs("short\n"
"pretty\n", stdout);
return 0;
} else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown JSON out mode: %s",
optarg);
break;
case ARG_DESTINATION:
arg_destination = optarg;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
static int busctl_main(int argc, char *argv[]) {
static const Verb verbs[] = {
{ "list", VERB_ANY, 1, VERB_DEFAULT, list_bus_names },
{ "status", VERB_ANY, 2, 0, status },
{ "monitor", VERB_ANY, VERB_ANY, 0, verb_monitor },
{ "capture", VERB_ANY, VERB_ANY, 0, verb_capture },
{ "tree", VERB_ANY, VERB_ANY, 0, tree },
{ "introspect", 3, 4, 0, introspect },
{ "call", 5, VERB_ANY, 0, call },
{ "emit", 4, VERB_ANY, 0, emit_signal },
{ "get-property", 5, VERB_ANY, 0, get_property },
{ "set-property", 6, VERB_ANY, 0, set_property },
{ "help", VERB_ANY, VERB_ANY, 0, verb_help },
{}
};
return dispatch_verb(argc, argv, verbs, NULL);
}
static int run(int argc, char *argv[]) {
int r;
log_show_color(true);
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
return r;
return busctl_main(argc, argv);
}
DEFINE_MAIN_FUNCTION(run);