From 19f4f86bfed21c5326ed2acebe1163f3a83e832b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 04:25:50 +0200 Subject: Adding upstream version 241. Signed-off-by: Daniel Baumann --- src/busctl/busctl.c | 2471 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2471 insertions(+) create mode 100644 src/busctl/busctl.c (limited to 'src/busctl/busctl.c') diff --git a/src/busctl/busctl.c b/src/busctl/busctl.c new file mode 100644 index 0000000..08d9e70 --- /dev/null +++ b/src/busctl/busctl.c @@ -0,0 +1,2471 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include +#include + +#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 "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 "strv.h" +#include "terminal-util.h" +#include "user-util.h" +#include "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_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_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_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _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; + + 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"); + + (void) pager_open(arg_pager_flags); + + 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, NAME_IS_ACQUIRED); + if (r < 0) + return log_error_errno(r, "Failed to add to hashmap: %m"); + } + + STRV_FOREACH(i, activatable) { + max_i = MAX(max_i, strlen(*i)); + + r = hashmap_put(names, *i, NAME_IS_ACTIVATABLE); + if (r < 0 && r != -EEXIST) + return log_error_errno(r, "Failed to add to hashmap: %m"); + } + + merged = new(char*, hashmap_size(names) + 1); + if (!merged) + return log_oom(); + + 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_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; + sd_id128_t mid; + + if (hashmap_get(names, *i) == NAME_IS_ACTIVATABLE) { + /* 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, + (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) { + 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_euid(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 + * 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) { + 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; +} + +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); + + /* 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, "%s", 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(&buf, &sz); + if (!mf) + return log_oom(); + + (void) __fsetlocking(mf, FSETLOCKING_BYCALLER); + + 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)) { + log_error("Invalid service name '%s'", *i); + return -EINVAL; + } + + 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, "%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) { + log_error("Too many parameters for signature."); + return -EINVAL; + } + } + + 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, "%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 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, "%s", 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) { + log_error("Too many parameters for signature."); + return -EINVAL; + } + + r = sd_bus_call(bus, m, arg_timeout, &error, NULL); + if (r < 0) + return log_error_errno(r, "%s", 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\n" + "Commands:\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" + " 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_EXPECT_REPLY, + ARG_AUTO_START, + ARG_ALLOW_INTERACTIVE_AUTHORIZATION, + ARG_TIMEOUT, + ARG_AUGMENT_CREDS, + ARG_WATCH_BIND, + ARG_JSON, + }; + + 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 }, + { "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 }, + {}, + }; + + 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_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 '?': + 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 }, + { "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_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + return r; + + return busctl_main(argc, argv); +} + +DEFINE_MAIN_FUNCTION(run); -- cgit v1.2.3