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path: root/src/libsystemd/sd-bus/busctl.c
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Diffstat (limited to 'src/libsystemd/sd-bus/busctl.c')
-rw-r--r--src/libsystemd/sd-bus/busctl.c409
1 files changed, 341 insertions, 68 deletions
diff --git a/src/libsystemd/sd-bus/busctl.c b/src/libsystemd/sd-bus/busctl.c
index 809940a2d5..7f5124f800 100644
--- a/src/libsystemd/sd-bus/busctl.c
+++ b/src/libsystemd/sd-bus/busctl.c
@@ -52,6 +52,7 @@ 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 void pager_open_if_enabled(void) {
@@ -475,12 +476,152 @@ static int tree(sd_bus *bus, char **argv) {
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 (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);
+ } else if (type == SD_BUS_TYPE_VARIANT) {
+
+ if (needs_space)
+ fputc(' ', f);
+
+ fprintf(f, "%s", contents);
+ }
+
+ r = format_cmdline(m, f, true);
+ if (r < 0)
+ return r;
+
+ 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.");
+ }
+
+ }
+}
+
typedef struct Member {
const char *type;
char *interface;
char *name;
char *signature;
char *result;
+ char *value;
bool writable;
uint64_t flags;
} Member;
@@ -550,6 +691,7 @@ static void member_free(Member *m) {
free(m->name);
free(m->signature);
free(m->result);
+ free(m->value);
free(m);
}
@@ -758,16 +900,93 @@ static int introspect(sd_bus *bus, char **argv) {
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) {
+
+ if (!streq(m->type, "property"))
+ continue;
+
+ if (m->value)
+ continue;
+
+ r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", m->interface);
+ 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 (;;) {
+ 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();
+
+ r = format_cmdline(reply, mf, false);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ fclose(mf);
+ mf = NULL;
+
+ z = set_get(members, &((Member) {
+ .type = "property",
+ .interface = m->interface,
+ .name = (char*) name }));
+ if (z) {
+ free(z->value);
+ z->value = buf;
+ buf = NULL;
+ }
+
+ 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);
+ }
+
pager_open_if_enabled();
name_width = strlen("NAME");
type_width = strlen("TYPE");
signature_width = strlen("SIGNATURE");
- result_width = strlen("RESULT");
+ result_width = strlen("RESULT/VALUE");
sorted = newa(Member*, set_size(members));
@@ -782,27 +1001,45 @@ static int introspect(sd_bus *bus, char **argv) {
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;
+
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");
+ 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];
is_interface = streq(m->type, "interface");
+ if (m->value) {
+ ellipsized = ellipsize(m->value, result_width, 100);
+ if (!ellipsized)
+ return log_oom();
+
+ rv = ellipsized;
+ } else
+ rv = strdash(m->result);
+
printf("%s%s%-*s%s %-*s %-*s %-*s%s%s%s%s%s%s\n",
is_interface ? ansi_highlight() : "",
is_interface ? "" : ".",
@@ -810,7 +1047,7 @@ static int introspect(sd_bus *bus, char **argv) {
is_interface ? ansi_highlight_off() : "",
(int) type_width, strdash(m->type),
(int) signature_width, strdash(m->signature),
- (int) result_width, strdash(m->result),
+ (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" : "",
@@ -1241,9 +1478,26 @@ static int call(sd_bus *bus, char *argv[]) {
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);
+
+ if (arg_verbose) {
+ pager_open_if_enabled();
+
+ 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;
@@ -1252,99 +1506,106 @@ static int call(sd_bus *bus, char *argv[]) {
static int get_property(sd_bus *bus, char *argv[]) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned n;
+ char **i;
int r;
assert(bus);
n = strv_length(argv);
- if (n < 3) {
- log_error("Expects at least three arguments.");
+ if (n < 5) {
+ log_error("Expects at least four arguments.");
return -EINVAL;
}
- if (n < 5) {
+ STRV_FOREACH(i, argv + 4) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- bool not_first = false;
+ const char *contents = NULL;
+ char type;
- r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", strempty(argv[3]));
+ 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, 'a', "{sv}");
+ r = sd_bus_message_peek_type(reply, &type, &contents);
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);
+ r = sd_bus_message_enter_container(reply, 'v', contents);
+ if (r < 0)
+ return bus_log_parse_error(r);
+ if (arg_verbose) {
pager_open_if_enabled();
- bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);
- r = sd_bus_message_exit_container(reply);
+ r = bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);
if (r < 0)
- return bus_log_parse_error(r);
+ return r;
+ } else {
+ fputs(contents, stdout);
+ fputc(' ', stdout);
- r = sd_bus_message_exit_container(reply);
+ r = format_cmdline(reply, stdout, false);
if (r < 0)
return bus_log_parse_error(r);
- not_first = true;
+ fputc('\n', stdout);
}
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;
+ return 0;
+}
- 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;
- }
+static int set_property(sd_bus *bus, char *argv[]) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ unsigned n;
+ char **p;
+ int r;
- r = sd_bus_message_enter_container(reply, 'v', NULL);
- if (r < 0)
- return bus_log_parse_error(r);
+ assert(bus);
- if (i > argv + 4)
- printf("\n");
+ n = strv_length(argv);
+ if (n < 6) {
+ log_error("Expects at least five arguments.");
+ return -EINVAL;
+ }
- if (argv[5])
- printf("Property %s:\n", *i);
+ 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);
- pager_open_if_enabled();
- bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);
+ r = sd_bus_message_append(m, "ss", argv[3], argv[4]);
+ if (r < 0)
+ return bus_log_create_error(r);
- r = sd_bus_message_exit_container(reply);
- if (r < 0)
- return bus_log_parse_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, 0, &error, NULL);
+ if (r < 0) {
+ log_error("%s", bus_error_message(&error, r));
+ return r;
}
return 0;
@@ -1368,18 +1629,21 @@ static int help(void) {
" --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"
+ " --quiet Don't show method call reply\n"
+ " --verbose Show result values in long format\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"
+ " introspect SERVICE OBJECT\n"
" call SERVICE OBJECT INTERFACE METHOD [SIGNATURE [ARGUMENT...]]\n"
" Call a method\n"
- " get-property SERVICE OBJECT [INTERFACE [PROPERTY...]]\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"
, program_invocation_short_name);
@@ -1402,6 +1666,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_ACTIVATABLE,
ARG_SIZE,
ARG_LIST,
+ ARG_VERBOSE,
};
static const struct option options[] = {
@@ -1422,6 +1687,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "size", required_argument, NULL, ARG_SIZE },
{ "list", no_argument, NULL, ARG_LIST },
{ "quiet", no_argument, NULL, 'q' },
+ { "verbose", no_argument, NULL, ARG_VERBOSE },
{},
};
@@ -1519,6 +1785,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_quiet = true;
break;
+ case ARG_VERBOSE:
+ arg_verbose = true;
+ break;
+
case '?':
return -EINVAL;
@@ -1557,6 +1827,9 @@ static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
if (streq(argv[optind], "get-property"))
return get_property(bus, argv + optind);
+ if (streq(argv[optind], "set-property"))
+ return set_property(bus, argv + optind);
+
if (streq(argv[optind], "help"))
return help();
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 11:49:21 +0000