busctl.c revision d9130355ee0530117518ff24354bdd552d030238
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <getopt.h>
#include "strv.h"
#include "util.h"
#include "log.h"
#include "build.h"
#include "pager.h"
#include "xml.h"
#include "path-util.h"
#include "sd-bus.h"
#include "bus-message.h"
#include "bus-internal.h"
#include "bus-util.h"
#include "bus-dump.h"
static bool arg_no_pager = false;
static bool arg_legend = true;
static 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 bool arg_user = false;
static bool arg_list = false;
static void pager_open_if_enabled(void) {
/* Cache result before we open the pager */
if (arg_no_pager)
return;
pager_open(false);
}
char **i;
int r;
unsigned n = 0;
void *v;
char *k;
r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);
if (r < 0) {
return r;
}
if (!names)
return log_oom();
STRV_FOREACH(i, acquired) {
if (r < 0) {
return r;
}
}
STRV_FOREACH(i, activatable) {
if (r < 0 && r != -EEXIST) {
return r;
}
}
merged[n++] = k;
if (arg_legend) {
printf("%-*s %*s %-*s %-*s %-*s %-*s %-*s %-*s",
(int) max_i, "NAME", 10, "PID", 15, "PROCESS", 16, "USER", 13, "CONNECTION", 25, "UNIT", 10, "SESSION", 19, "DESCRIPTION");
if (arg_show_machine)
puts(" MACHINE");
else
putchar('\n');
}
STRV_FOREACH(i, merged) {
/* Activatable */
printf(" - - - (activatable) - - ");
if (arg_show_machine)
puts(" -");
else
putchar('\n');
continue;
}
if (!arg_unique && (*i)[0] == ':')
continue;
if (!arg_acquired && (*i)[0] != ':')
continue;
r = sd_bus_get_name_creds(bus, *i,
if (r >= 0) {
if (r >= 0) {
} else
if (r >= 0) {
_cleanup_free_ char *u = NULL;
u = uid_to_name(uid);
if (!u)
return log_oom();
if (strlen(u) > 16)
u[16] = 0;
printf(" %-16s", u);
} else
if (r >= 0)
else
if (r >= 0) {
_cleanup_free_ char *e;
if (!e)
return log_oom();
printf(" %-25s", e);
} else
if (r >= 0)
else
if (r >= 0)
else
} else
printf(" - - - - - - - ");
if (arg_show_machine) {
if (r >= 0) {
char m[SD_ID128_STRING_MAX];
} else
puts(" -");
} else
putchar('\n');
}
return 0;
}
char **n;
/* We assume the list is sorted. Let's first skip over the
* entry we are looking at. */
for (;;) {
if (!*l)
return;
break;
l++;
}
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++;
}
l = n;
}
}
static void print_tree(const char *prefix, char **l) {
if (arg_list) {
char **i;
STRV_FOREACH(i, l)
return;
}
if (!strv_isempty(l))
}
static int parse_xml_annotation(
const char **p,
void **xml_state) {
enum {
} state = STATE_ANNOTATION;
for (;;) {
int t;
if (t < 0) {
log_error("XML parse error.");
return t;
}
if (t == XML_END) {
log_error("Premature end of XML data.");
return -EBADMSG;
}
switch (state) {
case STATE_ANNOTATION:
if (t == XML_ATTRIBUTE_NAME) {
state = STATE_NAME;
state = STATE_VALUE;
else {
return -EBADMSG;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
return 0;
log_error("Unexpected token in <annotation>. (1)");
return -EINVAL;
}
break;
case STATE_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <annotation>. (2)");
return -EINVAL;
}
break;
case STATE_VALUE:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <annotation>. (3)");
return -EINVAL;
}
break;
default:
assert_not_reached("Bad state");
}
}
}
static int parse_xml_node(
const char *prefix,
const char **p,
void **xml_state) {
enum {
} state = STATE_NODE;
int r;
for (;;) {
int t;
if (t < 0) {
log_error("XML parse error.");
return t;
}
if (t == XML_END) {
log_error("Premature end of XML data.");
return -EBADMSG;
}
switch (state) {
case STATE_NODE:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
if (r < 0)
return r;
} else {
return -EBADMSG;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
if (paths) {
if (!node_path) {
if (!node_path)
return log_oom();
}
if (r < 0)
return log_oom();
else if (r > 0)
}
return 0;
log_error("Unexpected token in <node>. (1)");
return -EINVAL;
}
break;
case STATE_NODE_NAME:
if (t == XML_ATTRIBUTE_VALUE) {
if (name[0] == '/') {
} else {
else
if (!node_path)
return log_oom();
}
state = STATE_NODE;
} else {
log_error("Unexpected token in <node>. (2)");
return -EINVAL;
}
break;
case STATE_INTERFACE:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
state = STATE_NODE;
log_error("Unexpected token in <interface>. (1)");
return -EINVAL;
}
break;
case STATE_INTERFACE_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <interface>. (2)");
return -EINVAL;
}
break;
case STATE_METHOD:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
log_error("Unexpected token in <method> (1).");
return -EINVAL;
}
break;
case STATE_METHOD_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <method> (2).");
return -EINVAL;
}
break;
case STATE_METHOD_ARG:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
log_error("Unexpected token in method <arg>. (1)");
return -EINVAL;
}
break;
case STATE_METHOD_ARG_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in method <arg>. (2)");
return -EINVAL;
}
break;
case STATE_METHOD_ARG_TYPE:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in method <arg>. (3)");
return -EINVAL;
}
break;
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in method <arg>. (4)");
return -EINVAL;
}
break;
case STATE_SIGNAL:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
log_error("Unexpected token in <signal>. (1)");
return -EINVAL;
}
break;
case STATE_SIGNAL_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <signal>. (2)");
return -EINVAL;
}
break;
case STATE_SIGNAL_ARG:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
log_error("Unexpected token in signal <arg> (1).");
return -EINVAL;
}
break;
case STATE_SIGNAL_ARG_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in signal <arg> (2).");
return -EINVAL;
}
break;
case STATE_SIGNAL_ARG_TYPE:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in signal <arg> (3).");
return -EINVAL;
}
break;
case STATE_PROPERTY:
if (t == XML_ATTRIBUTE_NAME) {
else {
return -EBADMSG;
}
} else if (t == XML_TAG_OPEN) {
r = parse_xml_annotation(p, xml_state);
if (r < 0)
return r;
} else {
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
log_error("Unexpected token in <property>. (1)");
return -EINVAL;
}
break;
case STATE_PROPERTY_NAME:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <property>. (2)");
return -EINVAL;
}
break;
case STATE_PROPERTY_TYPE:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <property>. (3)");
return -EINVAL;
}
break;
case STATE_PROPERTY_ACCESS:
if (t == XML_ATTRIBUTE_VALUE)
else {
log_error("Unexpected token in <property>. (4)");
return -EINVAL;
}
break;
}
}
}
const char *xml, *p;
int r;
r = sd_bus_call_method(bus, service, path, "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
if (r < 0) {
log_error("Failed to introspect object %s of service %s: %s", path, service, bus_error_message(&error, r));
return r;
}
if (r < 0)
return bus_log_parse_error(r);
/* fputs(xml, stdout); */
p = xml;
for (;;) {
if (r < 0) {
log_error("XML parse error");
return r;
}
if (r == XML_END)
break;
if (r == XML_TAG_OPEN) {
if (r < 0)
return r;
} else {
return -EBADMSG;
}
log_error("Unexpected token.");
return -EINVAL;
}
}
return 0;
}
_cleanup_free_ char **l = NULL;
char *m;
int r;
if (!paths)
return log_oom();
if (!done)
return log_oom();
if (!failed)
return log_oom();
m = strdup("/");
if (!m)
return log_oom();
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;
if (q < 0) {
if (r >= 0)
r = q;
} else
if (q < 0)
return log_oom();
assert(q != 0);
p = NULL;
}
l = set_get_strv(done);
if (!l)
return log_oom();
strv_sort(l);
print_tree(prefix, l);
return r;
}
char **i;
int r = 0;
if (!arg_unique && !arg_acquired)
arg_acquired = true;
bool not_first = true;
if (r < 0) {
return r;
}
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:\n", *i);
if (q < 0 && r >= 0)
r = q;
not_first = true;
}
} else {
int q;
if (i > argv+1)
printf("\n");
if (argv[2])
printf("Service %s:\n", *i);
if (q < 0 && r >= 0)
r = q;
}
}
return r;
}
return bus_message_dump(m, f, true);
}
return bus_message_pcap_frame(m, arg_snaplen, f);
}
bool added_something = false;
char **i;
int r;
_cleanup_free_ char *m = NULL;
if (!service_name_is_valid(*i)) {
log_error("Invalid service name '%s'", *i);
return -EINVAL;
}
if (!m)
return log_oom();
if (r < 0) {
return r;
}
added_something = true;
}
STRV_FOREACH(i, arg_matches) {
if (r < 0) {
return r;
}
added_something = true;
}
if (!added_something) {
if (r < 0) {
return r;
}
}
for (;;) {
r = sd_bus_process(bus, &m);
if (r < 0) {
return r;
}
if (m) {
continue;
}
if (r > 0)
continue;
if (r < 0) {
return r;
}
}
}
int r;
log_error("Refusing to write message data to console, please redirect output to a file.");
return -EINVAL;
}
if (r < 0)
return r;
log_error("Couldn't write capture file.");
return -EIO;
}
return r;
}
int r;
log_error("Expects one argument.");
return -EINVAL;
}
if (r < 0)
else
if (r < 0) {
return r;
}
return 0;
}
static int help(void) {
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"
" --list Don't show tree, but simple object path list\n\n"
"Commands:\n"
" list List bus names\n"
" tree [SERVICE...] Show object tree of service\n"
" monitor [SERVICE...] Show bus traffic\n"
" capture [SERVICE...] Capture bus traffic as pcap\n"
" status NAME Show name status\n"
" help Show this help\n"
return 0;
}
enum {
ARG_VERSION = 0x100,
};
{},
};
int c, r;
switch (c) {
case 'h':
return help();
case ARG_VERSION:
return 0;
case ARG_NO_PAGER:
arg_no_pager = true;
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:
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:
return log_oom();
break;
case ARG_SIZE: {
off_t o;
r = parse_size(optarg, 0, &o);
if (r < 0) {
return r;
}
log_error("Size out of range.");
return -E2BIG;
}
arg_snaplen = (size_t) o;
break;
}
case ARG_LIST:
arg_list = true;
break;
case 'H':
break;
case 'M':
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
return help();
return -EINVAL;
}
int r;
log_open();
if (r <= 0)
goto finish;
r = sd_bus_new(&bus);
if (r < 0) {
goto finish;
}
r = sd_bus_set_monitor(bus, true);
if (r < 0) {
goto finish;
}
if (r < 0) {
goto finish;
}
r = sd_bus_negotiate_timestamp(bus, true);
if (r < 0) {
goto finish;
}
r = sd_bus_negotiate_fds(bus, true);
if (r < 0) {
goto finish;
}
}
if (arg_address)
else {
switch (arg_transport) {
case BUS_TRANSPORT_LOCAL:
if (arg_user)
r = bus_set_address_user(bus);
else
r = bus_set_address_system(bus);
break;
case BUS_TRANSPORT_REMOTE:
break;
case BUS_TRANSPORT_CONTAINER:
break;
default:
assert_not_reached("Hmm, unknown transport type.");
}
}
if (r < 0) {
goto finish;
}
r = sd_bus_set_bus_client(bus, true);
if (r < 0) {
goto finish;
}
r = sd_bus_start(bus);
if (r < 0) {
goto finish;
}
pager_close();
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}