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-rw-r--r--man/busctl.xml36
-rw-r--r--src/libsystemd/sd-bus/busctl-introspect.c228
-rw-r--r--src/libsystemd/sd-bus/busctl-introspect.h9
-rw-r--r--src/libsystemd/sd-bus/busctl.c362
4 files changed, 565 insertions, 70 deletions
diff --git a/man/busctl.xml b/man/busctl.xml
index 730a3344d6..ccbd832a75 100644
--- a/man/busctl.xml
+++ b/man/busctl.xml
@@ -186,13 +186,10 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
</varlistentry>
<varlistentry>
- <term><command>tree</command> <arg choice="opt" rep="repeat"><replaceable>SERVICE</replaceable></arg></term>
+ <term><command>status</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg></term>
- <listitem><para>Shows an object tree of one or more
- services. If <replaceable>SERVICE</replaceable> is specified,
- show object tree of the specified services only. Otherwise,
- show all object trees of all services on the bus that acquired
- at least one well-known name.</para></listitem>
+ <listitem><para>Show process information and credentials of a
+ bus service.</para></listitem>
</varlistentry>
<varlistentry>
@@ -201,7 +198,7 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
<listitem><para>Dump messages being exchanged. If
<replaceable>SERVICE</replaceable> is specified, show messages
to or from this endpoint. Otherwise, show all messages on the
- bus.</para></listitem>
+ bus. Use Ctrl-C to terminate dump.</para></listitem>
</varlistentry>
<varlistentry>
@@ -218,24 +215,35 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
</varlistentry>
<varlistentry>
- <term><command>status</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg></term>
+ <term><command>tree</command> <arg choice="opt" rep="repeat"><replaceable>SERVICE</replaceable></arg></term>
- <listitem><para>Show process information and credentials of a
- bus service.</para></listitem>
+ <listitem><para>Shows an object tree of one or more
+ services. If <replaceable>SERVICE</replaceable> is specified,
+ show object tree of the specified services only. Otherwise,
+ show all object trees of all services on the bus that acquired
+ at least one well-known name.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>introspect</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg></term>
+
+ <listitem><para>Show interfaces, methods, properties and
+ signals of the specified object (identified by its path) on
+ the specified service.</para></listitem>
</varlistentry>
<varlistentry>
- <term><command>call</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="plain"><replaceable>INTERFACE</replaceable></arg> <arg choice="plain"><replaceable>METHOD</replaceable></arg> <arg choice="opt"><replaceable>SIGNATURE</replaceable> <arg choice="opt" rep="repeat"><replaceable>PARAMETERS</replaceable></arg></arg></term>
+ <term><command>call</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="plain"><replaceable>INTERFACE</replaceable></arg> <arg choice="plain"><replaceable>METHOD</replaceable></arg> <arg choice="opt"><replaceable>SIGNATURE</replaceable> <arg choice="opt" rep="repeat"><replaceable>ARGUMENT</replaceable></arg></arg></term>
<listitem><para>Invoke a method and show the response. Takes a
service name, object path, interface name and method name. If
parameters shall be passed to the method call a signature
- string is required, followed by the individual parameters,
- individually formatted as textual arguments.</para></listitem>
+ string is required, followed by the individual arguments,
+ individually formatted as textual parameters.</para></listitem>
</varlistentry>
<varlistentry>
- <term><command>get-property</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="opt"><replaceable>INTERFACE</replaceable> <arg choice="opt" rep="repeat"><replaceable>PROPERTIES</replaceable></arg></arg></term>
+ <term><command>get-property</command> <arg choice="plain"><replaceable>SERVICE</replaceable></arg> <arg choice="plain"><replaceable>OBJECT</replaceable></arg> <arg choice="opt"><replaceable>INTERFACE</replaceable> <arg choice="opt" rep="repeat"><replaceable>PROPERTY</replaceable></arg></arg></term>
<listitem><para>Retrieve the current value one or more object
properties. Takes a service name and object path. Optionally
diff --git a/src/libsystemd/sd-bus/busctl-introspect.c b/src/libsystemd/sd-bus/busctl-introspect.c
index 041702864b..15c10da7e9 100644
--- a/src/libsystemd/sd-bus/busctl-introspect.c
+++ b/src/libsystemd/sd-bus/busctl-introspect.c
@@ -38,11 +38,30 @@ typedef struct Context {
char *member_signature;
char *member_result;
uint64_t member_flags;
+ bool member_writable;
const char *current;
void *xml_state;
} Context;
+static void context_reset_member(Context *c) {
+ free(c->member_name);
+ free(c->member_signature);
+ free(c->member_result);
+
+ c->member_name = c->member_signature = c->member_result = NULL;
+ c->member_flags = 0;
+ c->member_writable = false;
+}
+
+static void context_reset_interface(Context *c) {
+ free(c->interface_name);
+ c->interface_name = NULL;
+ c->interface_flags = 0;
+
+ context_reset_member(c);
+}
+
static int parse_xml_annotation(Context *context, uint64_t *flags) {
enum {
@@ -105,11 +124,11 @@ static int parse_xml_annotation(Context *context, uint64_t *flags) {
} else if (streq_ptr(field, "org.freedesktop.DBus.Property.EmitsChangedSignal")) {
if (streq_ptr(value, "const"))
- *flags |= SD_BUS_VTABLE_PROPERTY_CONST;
+ *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) | SD_BUS_VTABLE_PROPERTY_CONST;
else if (streq_ptr(value, "invalidates"))
- *flags |= SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION;
+ *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST)) | SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION;
else if (streq_ptr(value, "false"))
- *flags |= SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE;
+ *flags = *flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION);
}
}
@@ -182,7 +201,7 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
STATE_PROPERTY_ACCESS,
} state = STATE_NODE;
- _cleanup_free_ char *node_path = NULL;
+ _cleanup_free_ char *node_path = NULL, *argument_type = NULL, *argument_direction = NULL;
const char *np = prefix;
int r;
@@ -225,7 +244,6 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
if (streq_ptr(name, "interface"))
state = STATE_INTERFACE;
-
else if (streq_ptr(name, "node")) {
r = parse_xml_node(context, np, n_depth+1);
@@ -297,9 +315,10 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
state = STATE_METHOD;
else if (streq_ptr(name, "signal"))
state = STATE_SIGNAL;
- else if (streq_ptr(name, "property"))
+ else if (streq_ptr(name, "property")) {
+ context->member_flags |= SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE;
state = STATE_PROPERTY;
- else if (streq_ptr(name, "annotation")) {
+ } else if (streq_ptr(name, "annotation")) {
r = parse_xml_annotation(context, &context->interface_flags);
if (r < 0)
return r;
@@ -308,11 +327,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "interface")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "interface"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_interface) {
+ r = context->ops->on_interface(context->interface_name, context->interface_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_interface(context);
+ }
state = STATE_NODE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <interface>. (1)");
return -EINVAL;
}
@@ -321,9 +350,15 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_INTERFACE_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ if (n_depth == 0) {
+ free(context->interface_name);
+ context->interface_name = name;
+ name = NULL;
+ }
+
state = STATE_INTERFACE;
- else {
+ } else {
log_error("Unexpected token in <interface>. (2)");
return -EINVAL;
}
@@ -351,11 +386,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "method")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "method"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_method) {
+ r = context->ops->on_method(context->interface_name, context->member_name, context->member_signature, context->member_result, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <method> (1).");
return -EINVAL;
}
@@ -364,9 +409,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
+
state = STATE_METHOD;
- else {
+ } else {
log_error("Unexpected token in <method> (2).");
return -EINVAL;
}
@@ -396,11 +448,27 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) {
+
+ if (n_depth == 0) {
+
+ if (argument_type) {
+ if (!argument_direction || streq(argument_direction, "in")) {
+ if (!strextend(&context->member_signature, argument_type, NULL))
+ return log_oom();
+ } else if (streq(argument_direction, "out")) {
+ if (!strextend(&context->member_result, argument_type, NULL))
+ return log_oom();
+ }
+ }
- state = STATE_METHOD;
+ free(argument_type);
+ free(argument_direction);
+ argument_type = argument_direction = NULL;
+ }
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ state = STATE_METHOD;
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in method <arg>. (1)");
return -EINVAL;
}
@@ -420,9 +488,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_ARG_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_type);
+ argument_type = name;
+ name = NULL;
+
state = STATE_METHOD_ARG;
- else {
+ } else {
log_error("Unexpected token in method <arg>. (3)");
return -EINVAL;
}
@@ -431,9 +503,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_ARG_DIRECTION:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_direction);
+ argument_direction = name;
+ name = NULL;
+
state = STATE_METHOD_ARG;
- else {
+ } else {
log_error("Unexpected token in method <arg>. (4)");
return -EINVAL;
}
@@ -461,11 +537,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "signal")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "signal"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_signal) {
+ r = context->ops->on_signal(context->interface_name, context->member_name, context->member_signature, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <signal>. (1)");
return -EINVAL;
}
@@ -474,9 +560,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_SIGNAL_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
+
state = STATE_SIGNAL;
- else {
+ } else {
log_error("Unexpected token in <signal>. (2)");
return -EINVAL;
}
@@ -505,11 +598,18 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) {
- state = STATE_SIGNAL;
+ if (argument_type) {
+ if (!strextend(&context->member_signature, argument_type, NULL))
+ return log_oom();
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ free(argument_type);
+ argument_type = NULL;
+ }
+
+ state = STATE_SIGNAL;
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in signal <arg> (1).");
return -EINVAL;
}
@@ -529,9 +629,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_SIGNAL_ARG_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_type);
+ argument_type = name;
+ name = NULL;
+
state = STATE_SIGNAL_ARG;
- else {
+ } else {
log_error("Unexpected token in signal <arg> (3).");
return -EINVAL;
}
@@ -563,11 +667,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "property")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "property"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_property) {
+ r = context->ops->on_property(context->interface_name, context->member_name, context->member_signature, context->member_writable, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <property>. (1)");
return -EINVAL;
}
@@ -576,9 +690,15 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (2)");
return -EINVAL;
}
@@ -587,9 +707,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_signature);
+ context->member_signature = name;
+ name = NULL;
+ }
+
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (3)");
return -EINVAL;
}
@@ -598,9 +725,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_ACCESS:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (streq(name, "readwrite") || streq(name, "write"))
+ context->member_writable = true;
+
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (4)");
return -EINVAL;
}
@@ -629,27 +760,34 @@ int parse_xml_introspect(const char *prefix, const char *xml, const XMLIntrospec
r = xml_tokenize(&context.current, &name, &context.xml_state, NULL);
if (r < 0) {
log_error("XML parse error");
- return r;
+ goto finish;
}
- if (r == XML_END)
+ if (r == XML_END) {
+ r = 0;
break;
+ }
if (r == XML_TAG_OPEN) {
if (streq(name, "node")) {
r = parse_xml_node(&context, prefix, 0);
if (r < 0)
- return r;
+ goto finish;
} else {
log_error("Unexpected tag '%s' in introspection data.", name);
- return -EBADMSG;
+ r = -EBADMSG;
+ goto finish;
}
} else if (r != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token.");
- return -EINVAL;
+ r = -EBADMSG;
+ goto finish;
}
}
- return 0;
+finish:
+ context_reset_interface(&context);
+
+ return r;
}
diff --git a/src/libsystemd/sd-bus/busctl-introspect.h b/src/libsystemd/sd-bus/busctl-introspect.h
index 7c4cd6e5fd..9bea43717d 100644
--- a/src/libsystemd/sd-bus/busctl-introspect.h
+++ b/src/libsystemd/sd-bus/busctl-introspect.h
@@ -25,11 +25,10 @@
typedef struct XMLIntrospectOps {
int (*on_path)(const char *path, void *userdata);
- int (*on_interface)(const char *name, uint64_t flags);
- int (*on_method)(const char *name, const char *signature, const char *result, uint64_t flags, void *userdata);
- int (*on_signal)(const char *name, const char *signature, uint64_t flags, void *userdata);
- int (*on_property)(const char *name, const char *signature, uint64_t flags);
- int (*on_writable_property)(const char *name, const char *signature, uint64_t flags);
+ int (*on_interface)(const char *name, uint64_t flags, void *userdata);
+ int (*on_method)(const char *interface, const char *name, const char *signature, const char *result, uint64_t flags, void *userdata);
+ int (*on_signal)(const char *interface, const char *name, const char *signature, uint64_t flags, void *userdata);
+ int (*on_property)(const char *interface, const char *name, const char *signature, bool writable, uint64_t flags, void *userdata);
} XMLIntrospectOps;
int parse_xml_introspect(const char *prefix, const char *xml, const XMLIntrospectOps *ops, void *userdata);
diff --git a/src/libsystemd/sd-bus/busctl.c b/src/libsystemd/sd-bus/busctl.c
index c58a97bc14..bb89ab9d3c 100644
--- a/src/libsystemd/sd-bus/busctl.c
+++ b/src/libsystemd/sd-bus/busctl.c
@@ -319,7 +319,7 @@ static int on_path(const char *path, void *userdata) {
}
static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *paths) {
- const XMLIntrospectOps ops = {
+ static const XMLIntrospectOps ops = {
.on_path = on_path,
};
@@ -338,7 +338,6 @@ static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *p
if (r < 0)
return bus_log_parse_error(r);
- /* fputs(xml, stdout); */
return parse_xml_introspect(path, xml, &ops, paths);
}
@@ -470,6 +469,353 @@ static int tree(sd_bus *bus, char **argv) {
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);
}
@@ -1021,13 +1367,14 @@ static int help(void) {
" --quiet Don't show method call reply\n\n"
"Commands:\n"
" list List bus names\n"
- " tree [SERVICE...] Show object tree of service\n"
+ " status SERVICE Show service name status\n"
" monitor [SERVICE...] Show bus traffic\n"
" capture [SERVICE...] Capture bus traffic as pcap\n"
- " status SERVICE Show service name status\n"
- " call SERVICE PATH INTERFACE METHOD [SIGNATURE [ARGUMENTS...]]\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 PATH [INTERFACE [PROPERTY...]]\n"
+ " get-property SERVICE OBJECT [INTERFACE [PROPERTY...]]\n"
" Get property value\n"
" help Show this help\n"
, program_invocation_short_name);
@@ -1197,6 +1544,9 @@ static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
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);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-07 10:04:01 +0000