#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"

#include "bus-signature.h"

#include "busctl-introspect.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 BusTransport arg_transport = BUS_TRANSPORT_LOCAL;

static 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 void pager_open_if_enabled(void) {

/* Cache result before we open the pager */

if (arg_no_pager)

return;

pager_open(false);

}

static int list_bus_names(sd_bus *bus, char **argv) {

_cleanup_strv_free_ char **acquired = NULL, **activatable = NULL;

_cleanup_free_ char **merged = NULL;

_cleanup_hashmap_free_ Hashmap *names = NULL;

char **i;

int r;

size_t max_i = 0;

unsigned n = 0;

void *v;

char *k;

Iterator iterator;

assert(bus);

if (!arg_unique && !arg_acquired && !arg_activatable)

arg_unique = arg_acquired = arg_activatable = true;

r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);

if (r < 0) {

log_error("Failed to list names: %s", strerror(-r));

return r;

}

pager_open_if_enabled();

names = hashmap_new(&string_hash_ops);

if (!names)

return log_oom();

STRV_FOREACH(i, acquired) {

max_i = MAX(max_i, strlen(*i));

r = hashmap_put(names, *i, INT_TO_PTR(1));

if (r < 0) {

log_error("Failed to add to hashmap: %s", strerror(-r));

return r;

}

}

STRV_FOREACH(i, activatable) {

max_i = MAX(max_i, strlen(*i));

r = hashmap_put(names, *i, INT_TO_PTR(2));

if (r < 0 && r != -EEXIST) {

log_error("Failed to add to hashmap: %s", strerror(-r));

return r;

}

}

merged = new(char*, hashmap_size(names) + 1);

HASHMAP_FOREACH_KEY(v, k, names, iterator)

merged[n++] = k;

merged[n] = NULL;

strv_sort(merged);

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) {

_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;

sd_id128_t mid;

if (hashmap_get(names, *i) == INT_TO_PTR(2)) {

/* Activatable */

printf("%-*s", (int) max_i, *i);

printf(" - - - (activatable) - - ");

if (arg_show_machine)

puts(" -");

else

putchar('\n');

continue;

}

if (!arg_unique && (*i)[0] == ':')

continue;

if (!arg_acquired && (*i)[0] != ':')

continue;

printf("%-*s", (int) max_i, *i);

r = sd_bus_get_name_creds(bus, *i,

SD_BUS_CREDS_UID|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) {

const char *unique, *session, *unit, *cn;

pid_t pid;

uid_t uid;

r = sd_bus_creds_get_pid(creds, &pid);

if (r >= 0) {

const char *comm = NULL;

sd_bus_creds_get_comm(creds, &comm);

printf(" %10lu %-15s", (unsigned long) pid, strna(comm));

} else

fputs(" - - ", stdout);

r = sd_bus_creds_get_uid(creds, &uid);

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

fputs(" - ", stdout);

r = sd_bus_creds_get_unique_name(creds, &unique);

if (r >= 0)

printf(" %-13s", unique);

else

fputs(" - ", stdout);

r = sd_bus_creds_get_unit(creds, &unit);

if (r >= 0) {

_cleanup_free_ char *e;

e = ellipsize(unit, 25, 100);

if (!e)

return log_oom();

printf(" %-25s", e);

} else

fputs(" - ", stdout);

r = sd_bus_creds_get_session(creds, &session);

if (r >= 0)

printf(" %-10s", session);

else

fputs(" - ", stdout);

r = sd_bus_creds_get_description(creds, &cn);

if (r >= 0)

printf(" %-19s", cn);

else

fputs(" - ", stdout);

} else

printf(" - - - - - - - ");

if (arg_show_machine) {

r = sd_bus_get_name_machine_id(bus, *i, &mid);

if (r >= 0) {

char m[SD_ID128_STRING_MAX];

printf(" %s\n", sd_id128_to_string(mid, m));

} else

puts(" -");

} else

putchar('\n');

}

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

for (;;) {

if (!*l)

return;

if (!streq(*l, path))

break;

l++;

}

vertical = strappenda(prefix, draw_special_char(DRAW_TREE_VERTICAL));

space = strappenda(prefix, draw_special_char(DRAW_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, draw_special_char(has_more ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), *l);

print_subtree(has_more ? vertical : space, *l, l);

l = n;

}

}

static void print_tree(const char *prefix, char **l) {

pager_open_if_enabled();

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_bus_message_unref_ sd_bus_message *reply = NULL;

_cleanup_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("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;

}

pager_open_if_enabled();

l = set_get_strv(done);

if (!l)

return log_oom();

strv_sort(l);

print_tree(prefix, l);

fflush(stdout);

return r;

}

static int tree(sd_bus *bus, char **argv) {

char **i;

int r = 0;

if (!arg_unique && !arg_acquired)

arg_acquired = true;

if (strv_length(argv) <= 1) {

_cleanup_strv_free_ char **names = NULL;

bool not_first = false;

r = sd_bus_list_names(bus, &names, NULL);

if (r < 0) {

log_error("Failed to get name list: %s", strerror(-r));

return r;

}

pager_open_if_enabled();

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_highlight_off());

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]) {

pager_open_if_enabled();

printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_highlight_off());

}

q = tree_one(bus, *i, NULL, !!argv[2]);

if (q < 0 && r >= 0)

r = q;

}

}

return r;

}

typedef struct Member {

const char *type;

char *interface;

char *name;

char *signature;

char *result;

bool writable;

uint64_t flags;

} Member;

static unsigned long member_hash_func(const void *p, const uint8_t hash_key[]) {

const Member *m = p;

unsigned long ul;

assert(m);

assert(m->type);

ul = string_hash_func(m->type, hash_key);

if (m->name)

ul ^= string_hash_func(m->name, hash_key);

if (m->interface)

ul ^= string_hash_func(m->interface, hash_key);

return ul;

}

static int member_compare_func(const void *a, const void *b) {

const Member *x = a, *y = b;

int d;

assert(x);

assert(y);

assert(x->type);

assert(y->type);

if (!x->interface && y->interface)

return -1;

if (x->interface && !y->interface)

return 1;

if (x->interface && y->interface) {

d = strcmp(x->interface, y->interface);

if (d != 0)

return d;

}

d = strcmp(x->type, y->type);

if (d != 0)

return d;

if (!x->name && y->name)

return -1;

if (x->name && !y->name)

return 1;

if (x->name && y->name)

return strcmp(x->name, y->name);

return 0;

}

static int member_compare_funcp(const void *a, const void *b) {

const Member *const * x = (const Member *const *) a, * const *y = (const Member *const *) b;

return member_compare_func(*x, *y);

}

static void member_free(Member *m) {

if (!m)

return;

free(m->interface);

free(m->name);

free(m->signature);

free(m->result);

free(m);

}

DEFINE_TRIVIAL_CLEANUP_FUNC(Member*, member_free);

static void member_set_free(Set *s) {

Member *m;

while ((m = set_steal_first(s)))

member_free(m);

set_free(s);

}

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) {

log_error("Duplicate interface");

return -EINVAL;

}

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) {

log_error("Duplicate method");

return -EINVAL;

}

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) {

log_error("Duplicate signal");

return -EINVAL;

}

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) {

log_error("Duplicate property");

return -EINVAL;

}

m = NULL;

return 0;

}

static const char *strdash(const char *x) {

return isempty(x) ? "-" : x;

}

static int introspect(sd_bus *bus, char **argv) {

static const struct hash_ops member_hash_ops = {

.hash = member_hash_func,

.compare = member_compare_func,

};

static const XMLIntrospectOps ops = {

.on_interface = on_interface,

.on_method = on_method,

.on_signal = on_signal,

.on_property = on_property,

};

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_(member_set_freep) Set *members = NULL;

Iterator i;

Member *m;

const char *xml;

int r;

unsigned name_width, type_width, signature_width, result_width;

Member **sorted = NULL;

unsigned k = 0, j;

if (strv_length(argv) != 3) {

log_error("Requires service and object path argument.");

return -EINVAL;

}

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, "");

if (r < 0) {

log_error("Failed to introspect object %s of service %s: %s", argv[2], argv[1], bus_error_message(&error, r));

return r;

}

r = sd_bus_message_read(reply, "s", &xml);

if (r < 0)

return bus_log_parse_error(r);

r = parse_xml_introspect(argv[2], xml, &ops, members);

if (r < 0)

return r;

pager_open_if_enabled();

name_width = strlen("NAME");

type_width = strlen("TYPE");

signature_width = strlen("SIGNATURE");

result_width = strlen("RESULT");

sorted = newa(Member*, set_size(members));

SET_FOREACH(m, members, i) {

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));

sorted[k++] = m;

}

assert(k == set_size(members));

qsort(sorted, k, sizeof(Member*), member_compare_funcp);

printf("%-*s %-*s %-*s %-*s %s\n",

(int) name_width, "NAME",

(int) type_width, "TYPE",

(int) signature_width, "SIGNATURE",

(int) result_width, "RESULT",

"FLAGS");

for (j = 0; j < k; j++) {

bool is_interface;

m = sorted[j];

is_interface = streq(m->type, "interface");

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, strdash(streq_ptr(m->type, "interface") ? m->interface : m->name),

is_interface ? ansi_highlight_off() : "",

(int) type_width, strdash(m->type),

(int) signature_width, strdash(m->signature),

(int) result_width, strdash(m->result),

(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 monitor(sd_bus *bus, char *argv[], int (*dump)(sd_bus_message *m, FILE *f)) {

bool added_something = false;

char **i;

int r;

STRV_FOREACH(i, argv+1) {

_cleanup_free_ char *m = NULL;

if (!service_name_is_valid(*i)) {

log_error("Invalid service name '%s'", *i);

return -EINVAL;

}

m = strjoin("sender='", *i, "'", NULL);

if (!m)

return log_oom();

r = sd_bus_add_match(bus, NULL, m, NULL, NULL);

if (r < 0) {

log_error("Failed to add match: %s", strerror(-r));

return r;

}

added_something = true;

}

STRV_FOREACH(i, arg_matches) {

r = sd_bus_add_match(bus, NULL, *i, NULL, NULL);

if (r < 0) {

log_error("Failed to add match: %s", strerror(-r));

return r;

}

added_something = true;

}

if (!added_something) {

r = sd_bus_add_match(bus, NULL, "", NULL, NULL);

if (r < 0) {

log_error("Failed to add match: %s", strerror(-r));

return r;

}

}

for (;;) {

_cleanup_bus_message_unref_ sd_bus_message *m = NULL;

r = sd_bus_process(bus, &m);

if (r < 0) {

log_error("Failed to process bus: %s", strerror(-r));

return r;

}

if (m) {

dump(m, stdout);

continue;

}

if (r > 0)

continue;

r = sd_bus_wait(bus, (uint64_t) -1);

if (r < 0) {

log_error("Failed to wait for bus: %s", strerror(-r));

return r;

}

}

}

static int capture(sd_bus *bus, char *argv[]) {

int r;

if (isatty(fileno(stdout)) > 0) {

log_error("Refusing to write message data to console, please redirect output to a file.");

return -EINVAL;

}

bus_pcap_header(arg_snaplen, stdout);

r = monitor(bus, argv, message_pcap);

if (r < 0)

return r;

if (ferror(stdout)) {

log_error("Couldn't write capture file.");

return -EIO;

}

return r;

}

static int status(sd_bus *bus, char *argv[]) {

_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;

pid_t pid;

int r;

assert(bus);

if (strv_length(argv) != 2) {

log_error("Expects one argument.");

return -EINVAL;

}

r = parse_pid(argv[1], &pid);

if (r < 0)

r = sd_bus_get_name_creds(bus, argv[1], _SD_BUS_CREDS_ALL, &creds);

else

r = sd_bus_creds_new_from_pid(&creds, pid, _SD_BUS_CREDS_ALL);

if (r < 0) {

log_error("Failed to get credentials: %s", strerror(-r));

return r;

}

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) {

log_error("Too few parameters for signature.");

return -EINVAL;

}

signature++;

p++;

switch (t) {

case SD_BUS_TYPE_BOOLEAN:

r = parse_boolean(v);

if (r < 0) {

log_error("Failed to parse as boolean: %s", v);

return r;

}

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) {

log_error("Failed to parse as byte (unsigned 8bit integer): %s", v);

return r;

}

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) {

log_error("Failed to parse as signed 16bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as unsigned 16bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as signed 32bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as unsigned 32bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as signed 64bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as unsigned 64bit integer: %s", v);

return r;

}

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) {

log_error("Failed to parse as double precision floating point: %s", v);

return r;

}

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) {

log_error("Failed to parse number of array entries: %s", v);

return r;

}

r = signature_element_length(signature, &k);

if (r < 0) {

log_error("Invalid array signature.");

return r;

}

{

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) {

log_error("Invalid struct/dict entry signature.");

return r;

}

{

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:

log_error("UNIX file descriptor not supported as type.");

return -EINVAL;

default:

log_error("Unknown signature type %c.", t);

return -EINVAL;

}

if (r < 0)

return bus_log_create_error(r);

}

*x = p;

return 0;

}

static int call(sd_bus *bus, char *argv[]) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;

int r;

assert(bus);

if (strv_length(argv) < 5) {

log_error("Expects at least four arguments.");

return -EINVAL;

}

r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], argv[3], argv[4]);

if (r < 0) {

log_error("Failed to prepare bus message: %s", strerror(-r));

return 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) {

log_error("Too many parameters for signature.");

return -EINVAL;

}

}

r = sd_bus_call(bus, m, 0, &error, &reply);

if (r < 0) {

log_error("%s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_is_empty(reply);

if (r < 0)

return bus_log_parse_error(r);

if (r == 0 && !arg_quiet) {

pager_open_if_enabled();

bus_message_dump(reply, stdout, 0);

}

return 0;

}

static int get_property(sd_bus *bus, char *argv[]) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

unsigned n;

int r;

assert(bus);

n = strv_length(argv);

if (n < 3) {

log_error("Expects at least three arguments.");

return -EINVAL;

}

if (n < 5) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

bool not_first = false;

r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", strempty(argv[3]));

if (r < 0) {

log_error("%s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_enter_container(reply, 'a', "{sv}");

if (r < 0)

return bus_log_parse_error(r);

for (;;) {

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);

if (not_first)

printf("\n");

printf("Property %s:\n", name);

r = sd_bus_message_enter_container(reply, 'v', NULL);

if (r < 0)

return bus_log_parse_error(r);

pager_open_if_enabled();

bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);

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);

not_first = true;

}

r = sd_bus_message_exit_container(reply);

if (r < 0)

return bus_log_parse_error(r);

} else {

char **i;

STRV_FOREACH(i, argv + 4) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Get", &error, &reply, "ss", argv[3], *i);

if (r < 0) {

log_error("%s", bus_error_message(&error, r));

return r;

}

r = sd_bus_message_enter_container(reply, 'v', NULL);

if (r < 0)

return bus_log_parse_error(r);

if (i > argv + 4)

printf("\n");

if (argv[5])

printf("Property %s:\n", *i);

pager_open_if_enabled();

bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);

r = sd_bus_message_exit_container(reply);

if (r < 0)

return bus_log_parse_error(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"

" --quiet Don't show method call reply\n\n"

"Commands:\n"

" list List bus names\n"

" status SERVICE Show service name status\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 PATH\n"

" call SERVICE OBJECT INTERFACE METHOD [SIGNATURE [ARGUMENT...]]\n"

" Call a method\n"

" get-property SERVICE OBJECT [INTERFACE [PROPERTY...]]\n"

" Get property value\n"

" help Show this help\n"

, program_invocation_short_name);

return 0;

}

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,

};

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' },

{},

};

int c, r;

assert(argc >= 0);

assert(argv);

while ((c = getopt_long(argc, argv, "hH:M:q", options, NULL)) >= 0)

switch (c) {

case 'h':

return help();

case ARG_VERSION:

puts(PACKAGE_STRING);

puts(SYSTEMD_FEATURES);

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:

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: {

off_t o;

r = parse_size(optarg, 0, &o);

if (r < 0) {

log_error("Failed to parse size: %s", optarg);

return r;

}

if ((off_t) (size_t) o != o) {

log_error("Size out of range.");

return -E2BIG;

}

arg_snaplen = (size_t) o;

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_CONTAINER;

arg_host = optarg;

break;

case 'q':

arg_quiet = true;

break;

case '?':

return -EINVAL;

default:

assert_not_reached("Unhandled option");

}

return 1;

}

static int busctl_main(sd_bus *bus, int argc, char *argv[]) {

assert(bus);

if (optind >= argc ||

streq(argv[optind], "list"))

return list_bus_names(bus, argv + optind);

if (streq(argv[optind], "monitor"))

return monitor(bus, argv + optind, message_dump);

if (streq(argv[optind], "capture"))

return capture(bus, argv + optind);

if (streq(argv[optind], "status"))

return status(bus, argv + optind);

if (streq(argv[optind], "tree"))

return tree(bus, argv + optind);

if (streq(argv[optind], "introspect"))

return introspect(bus, argv + optind);

if (streq(argv[optind], "call"))

return call(bus, argv + optind);

if (streq(argv[optind], "get-property"))

return get_property(bus, argv + optind);

if (streq(argv[optind], "help"))

return help();

log_error("Unknown command '%s'", argv[optind]);

return -EINVAL;

}

int main(int argc, char *argv[]) {

_cleanup_bus_close_unref_ sd_bus *bus = NULL;

int r;

log_parse_environment();

log_open();

r = parse_argv(argc, argv);

if (r <= 0)

goto finish;

r = sd_bus_new(&bus);

if (r < 0) {

log_error("Failed to allocate bus: %s", strerror(-r));

goto finish;

}

if (streq_ptr(argv[optind], "monitor") ||

streq_ptr(argv[optind], "capture")) {

r = sd_bus_set_monitor(bus, true);

if (r < 0) {

log_error("Failed to set monitor mode: %s", strerror(-r));

goto finish;

}

r = sd_bus_negotiate_creds(bus, _SD_BUS_CREDS_ALL);

if (r < 0) {

log_error("Failed to enable credentials: %s", strerror(-r));

goto finish;

}

r = sd_bus_negotiate_timestamp(bus, true);

if (r < 0) {

log_error("Failed to enable timestamps: %s", strerror(-r));

goto finish;

}

r = sd_bus_negotiate_fds(bus, true);

if (r < 0) {

log_error("Failed to enable fds: %s", strerror(-r));

goto finish;

}

}

if (arg_address)

r = sd_bus_set_address(bus, 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:

r = bus_set_address_system_remote(bus, arg_host);

break;

case BUS_TRANSPORT_CONTAINER:

r = bus_set_address_system_container(bus, arg_host);

break;

default:

assert_not_reached("Hmm, unknown transport type.");

}

}

if (r < 0) {

log_error("Failed to set address: %s", strerror(-r));

goto finish;

}

r = sd_bus_set_bus_client(bus, true);

if (r < 0) {

log_error("Failed to set bus client: %s", strerror(-r));

goto finish;

}

r = sd_bus_start(bus);

if (r < 0) {

log_error("Failed to connect to bus: %s", strerror(-r));

goto finish;

}

r = busctl_main(bus, argc, argv);

finish:

pager_close();

strv_free(arg_matches);

return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;

}