[systemd-commits] .gitignore Makefile.am TODO src/libsystemd-bus src/systemd
Lennart Poettering
lennart at kemper.freedesktop.org
Tue Oct 8 17:48:37 PDT 2013
.gitignore | 2
Makefile.am | 28
TODO | 2
src/libsystemd-bus/bus-error.c | 33
src/libsystemd-bus/bus-internal.c | 23
src/libsystemd-bus/bus-internal.h | 65
src/libsystemd-bus/bus-introspect.c | 200 ++
src/libsystemd-bus/bus-introspect.h | 41
src/libsystemd-bus/bus-message.c | 81
src/libsystemd-bus/bus-signature.c | 6
src/libsystemd-bus/bus-signature.h | 2
src/libsystemd-bus/sd-bus.c | 2697 +++++++++++++++++++++++++------
src/libsystemd-bus/test-bus-introspect.c | 63
src/libsystemd-bus/test-bus-objects.c | 374 ++++
src/libsystemd-bus/test-bus-signature.c | 67
src/systemd/sd-bus-protocol.h | 39
src/systemd/sd-bus-vtable.h | 127 +
src/systemd/sd-bus.h | 54
18 files changed, 3322 insertions(+), 582 deletions(-)
New commits:
commit 29ddb38fea134c6132e4f2dd608e9da3871eaebe
Author: Lennart Poettering <lennart at poettering.net>
Date: Wed Oct 9 02:37:10 2013 +0200
libsystemd-bus: add lightweight object vtable implementation for exposing objects on the bus
This adds a lightweight scheme how to define interfaces in static fixed
arrays which then can be easily registered on a bus connection. This
makes it much easier to write bus services.
This automatically handles implementation of the Properties,
ObjectManager, and Introspection bus interfaces.
diff --git a/.gitignore b/.gitignore
index 5b38c0b..786a0be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -87,12 +87,14 @@
/tags
/test-boot-timestamp
/test-bus-chat
+/test-bus-introspect
/test-bus-kernel
/test-bus-kernel-bloom
/test-bus-kernel-benchmark
/test-bus-marshal
/test-bus-match
/test-bus-memfd
+/test-bus-objects
/test-bus-signature
/test-bus-server
/test-bus-zero-copy
diff --git a/Makefile.am b/Makefile.am
index 8d9c587..4c7646d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1956,6 +1956,8 @@ libsystemd_bus_la_SOURCES = \
src/libsystemd-bus/bus-match.h \
src/libsystemd-bus/bus-bloom.c \
src/libsystemd-bus/bus-bloom.h \
+ src/libsystemd-bus/bus-introspect.c \
+ src/libsystemd-bus/bus-introspect.h \
src/libsystemd-bus/kdbus.h \
src/libsystemd-bus/sd-memfd.c
@@ -1981,7 +1983,9 @@ tests += \
test-bus-kernel-bloom \
test-bus-kernel-benchmark \
test-bus-memfd \
- test-bus-zero-copy
+ test-bus-zero-copy \
+ test-bus-introspect \
+ test-bus-objects
noinst_PROGRAMS += \
busctl
@@ -2031,6 +2035,18 @@ test_bus_server_LDADD = \
libsystemd-bus.la \
libsystemd-id128-internal.la
+test_bus_objects_SOURCES = \
+ src/libsystemd-bus/test-bus-objects.c
+
+test_bus_objects_CFLAGS = \
+ $(AM_CFLAGS) \
+ -pthread
+
+test_bus_objects_LDADD = \
+ libsystemd-shared.la \
+ libsystemd-bus.la \
+ libsystemd-id128-internal.la
+
test_bus_match_SOURCES = \
src/libsystemd-bus/test-bus-match.c
@@ -2095,6 +2111,16 @@ test_bus_zero_copy_LDADD = \
libsystemd-shared.la \
libsystemd-bus.la
+test_bus_introspect_SOURCES = \
+ src/libsystemd-bus/test-bus-introspect.c
+
+test_bus_introspect_CFLAGS = \
+ $(AM_CFLAGS)
+
+test_bus_introspect_LDADD = \
+ libsystemd-shared.la \
+ libsystemd-bus.la
+
busctl_SOURCES = \
src/libsystemd-bus/busctl.c
diff --git a/TODO b/TODO
index 6764919..4a47463 100644
--- a/TODO
+++ b/TODO
@@ -54,6 +54,8 @@ Features:
* tmpfiles: when applying ownership to /run/log/journal also do this for the journal fails contained in it
+* rework list.h to use typeof() and thus simplify most linked list macros by not requring the type to be specified
+
* we probably should replace the left-over uses of strv_append() and replace them by strv_push() or strv_extend()
* move config_parse_path_strv() out of conf-parser.c
diff --git a/src/libsystemd-bus/bus-error.c b/src/libsystemd-bus/bus-error.c
index 4696a88..28fe154 100644
--- a/src/libsystemd-bus/bus-error.c
+++ b/src/libsystemd-bus/bus-error.c
@@ -51,7 +51,34 @@ void sd_bus_error_free(sd_bus_error *e) {
e->need_free = false;
}
-int sd_bus_error_set(sd_bus_error *e, const char *name, const char *format, ...) {
+int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message) {
+ char *n, *m = NULL;
+
+ if (!e)
+ return 0;
+ if (bus_error_is_dirty(e))
+ return -EINVAL;
+ if (!name)
+ return -EINVAL;
+
+ n = strdup(name);
+ if (!n)
+ return -ENOMEM;
+
+ if (message) {
+ m = strdup(message);
+ if (!m)
+ return -ENOMEM;
+ }
+
+ e->name = n;
+ e->message = m;
+ e->need_free = true;
+
+ return 0;
+}
+
+int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) {
char *n, *m = NULL;
va_list ap;
int r;
@@ -119,9 +146,7 @@ void sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *messa
if (bus_error_is_dirty(e))
return;
- e->name = name;
- e->message = message;
- e->need_free = false;
+ *e = SD_BUS_ERROR_MAKE(name, message);
}
int sd_bus_error_is_set(const sd_bus_error *e) {
diff --git a/src/libsystemd-bus/bus-internal.c b/src/libsystemd-bus/bus-internal.c
index cac948e..afff7bd 100644
--- a/src/libsystemd-bus/bus-internal.c
+++ b/src/libsystemd-bus/bus-internal.c
@@ -61,6 +61,29 @@ bool object_path_is_valid(const char *p) {
return true;
}
+char* object_path_startswith(const char *a, const char *b) {
+ const char *p;
+
+ if (!object_path_is_valid(a) ||
+ !object_path_is_valid(b))
+ return NULL;
+
+ if (streq(b, "/"))
+ return (char*) a + 1;
+
+ p = startswith(a, b);
+ if (!p)
+ return NULL;
+
+ if (*p == 0)
+ return (char*) p;
+
+ if (*p == '/')
+ return (char*) p + 1;
+
+ return NULL;
+}
+
bool interface_name_is_valid(const char *p) {
const char *q;
bool dot, found_dot = false;
diff --git a/src/libsystemd-bus/bus-internal.h b/src/libsystemd-bus/bus-internal.h
index 30b8d51..5795f74 100644
--- a/src/libsystemd-bus/bus-internal.h
+++ b/src/libsystemd-bus/bus-internal.h
@@ -54,14 +54,63 @@ struct filter_callback {
LIST_FIELDS(struct filter_callback, callbacks);
};
-struct object_callback {
+struct node {
+ char *path;
+ struct node *parent;
+ LIST_HEAD(struct node, child);
+ LIST_FIELDS(struct node, siblings);
+
+ LIST_HEAD(struct node_callback, callbacks);
+ LIST_HEAD(struct node_vtable, vtables);
+ LIST_HEAD(struct node_enumerator, enumerators);
+
+ bool object_manager;
+};
+
+struct node_callback {
+ struct node *node;
+
+ bool is_fallback;
sd_bus_message_handler_t callback;
void *userdata;
- char *path;
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_callback, callbacks);
+};
+
+struct node_enumerator {
+ struct node *node;
+
+ sd_bus_node_enumerator_t callback;
+ void *userdata;
+
+ unsigned last_iteration;
+
+ LIST_FIELDS(struct node_enumerator, enumerators);
+};
+
+struct node_vtable {
+ struct node *node;
+
+ char *interface;
bool is_fallback;
+ const sd_bus_vtable *vtable;
+ void *userdata;
+ sd_bus_object_find_t find;
unsigned last_iteration;
+
+ LIST_FIELDS(struct node_vtable, vtables);
+};
+
+struct vtable_member {
+ const char *path;
+ const char *interface;
+ const char *member;
+ struct node_vtable *parent;
+ unsigned last_iteration;
+ const sd_bus_vtable *vtable;
};
enum bus_state {
@@ -109,7 +158,7 @@ struct sd_bus {
bool processing:1;
bool match_callbacks_modified:1;
bool filter_callbacks_modified:1;
- bool object_callbacks_modified:1;
+ bool nodes_modified:1;
int use_memfd;
@@ -131,7 +180,12 @@ struct sd_bus {
Prioq *reply_callbacks_prioq;
Hashmap *reply_callbacks;
LIST_HEAD(struct filter_callback, filter_callbacks);
- Hashmap *object_callbacks;
+
+ Hashmap *nodes;
+
+
+ Hashmap *vtable_methods;
+ Hashmap *vtable_properties;
union {
struct sockaddr sa;
@@ -213,10 +267,11 @@ static inline void bus_unrefp(sd_bus **b) {
#define BUS_EXEC_ARGV_MAX 256
-bool object_path_is_valid(const char *p);
bool interface_name_is_valid(const char *p);
bool service_name_is_valid(const char *p);
bool member_name_is_valid(const char *p);
+bool object_path_is_valid(const char *p);
+char *object_path_startswith(const char *a, const char *b);
bool namespace_complex_pattern(const char *pattern, const char *value);
bool path_complex_pattern(const char *pattern, const char *value);
diff --git a/src/libsystemd-bus/bus-introspect.c b/src/libsystemd-bus/bus-introspect.c
new file mode 100644
index 0000000..8dc9a2d
--- /dev/null
+++ b/src/libsystemd-bus/bus-introspect.c
@@ -0,0 +1,200 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+#include "sd-bus-protocol.h"
+#include "bus-introspect.h"
+#include "bus-signature.h"
+#include "bus-internal.h"
+
+int introspect_begin(struct introspect *i) {
+ assert(i);
+
+ zero(*i);
+
+ i->f = open_memstream(&i->introspection, &i->size);
+ if (!i->f)
+ return -ENOMEM;
+
+ fputs(SD_BUS_INTROSPECT_DOCTYPE
+ "<node>\n", i->f);
+
+ return 0;
+}
+
+int introspect_write_default_interfaces(struct introspect *i, bool object_manager) {
+ assert(i);
+
+ fputs(SD_BUS_INTROSPECT_INTERFACE_PEER
+ SD_BUS_INTROSPECT_INTERFACE_INTROSPECTABLE
+ SD_BUS_INTROSPECT_INTERFACE_PROPERTIES, i->f);
+
+ if (object_manager)
+ fputs(SD_BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER, i->f);
+
+ return 0;
+}
+
+int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix) {
+ char *node;
+
+ assert(i);
+ assert(prefix);
+
+ while ((node = set_steal_first(s))) {
+ const char *e;
+
+ e = object_path_startswith(node, prefix);
+ if (e)
+ fprintf(i->f, " <node name=\"%s\"/>\n", e);
+
+ free(node);
+ }
+
+ return 0;
+}
+
+static void introspect_write_flags(struct introspect *i, int type, int flags) {
+ if (flags & SD_BUS_VTABLE_DEPRECATED)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
+
+ if (type == _SD_BUS_VTABLE_METHOD && flags & SD_BUS_VTABLE_METHOD_NO_REPLY)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Method.NoReply\" value=\"true\"/>\n", i->f);
+
+ if (type == _SD_BUS_VTABLE_PROPERTY || type == _SD_BUS_VTABLE_WRITABLE_PROPERTY) {
+ if (!(flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
+ fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n", i->f);
+ else if (flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"invalidates\"/>\n", i->f);
+ }
+}
+
+static int introspect_write_arguments(struct introspect *i, const char *signature, const char *direction) {
+ int r;
+
+ for (;;) {
+ size_t l;
+
+ if (!*signature)
+ return 0;
+
+ r = signature_element_length(signature, &l);
+ if (r < 0)
+ return r;
+
+ fprintf(i->f, " <arg type=\"%.*s\"", (int) l, signature);
+
+ if (direction)
+ fprintf(i->f, " direction=\"%s\">\n", direction);
+ else
+ fputs(">\n", i->f);
+
+ signature += l;
+ }
+}
+
+int introspect_write_interface(struct introspect *i, const char *interface, const sd_bus_vtable *v) {
+ assert(i);
+ assert(interface);
+ assert(v);
+
+ fprintf(i->f, " <interface name=\"%s\">\n", interface);
+
+ for (; v->type != _SD_BUS_VTABLE_END; v++) {
+
+ switch (v->type) {
+
+ case _SD_BUS_VTABLE_START:
+ if (v->flags & SD_BUS_VTABLE_DEPRECATED)
+ fputs(" <annotation name=\"org.freedesktop.DBus.Deprecated\" value=\"true\"/>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_METHOD:
+ fprintf(i->f, " <method name=\"%s\">\n", v->method.member);
+ introspect_write_arguments(i, v->method.signature, "in");
+ introspect_write_arguments(i, v->method.result, "out");
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </method>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_PROPERTY:
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY:
+ fprintf(i->f, " <property name=\"%s\" type=\"%s\" access=\"%s\">\n",
+ v->property.member,
+ v->property.signature,
+ v->type == _SD_BUS_VTABLE_WRITABLE_PROPERTY ? "readwrite" : "read");
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </property>\n", i->f);
+ break;
+
+ case _SD_BUS_VTABLE_SIGNAL:
+ fprintf(i->f, " <signal name=\"%s\">\n", v->signal.member);
+ introspect_write_arguments(i, v->signal.signature, NULL);
+ introspect_write_flags(i, v->type, v->flags);
+ fputs(" </signal>\n", i->f);
+ break;
+ }
+
+ }
+
+ fputs(" </interface>\n", i->f);
+ return 0;
+}
+
+int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply) {
+ sd_bus_message *q;
+ int r;
+
+ assert(i);
+ assert(m);
+ assert(reply);
+
+ fputs("</node>\n", i->f);
+ fflush(i->f);
+
+ if (ferror(i->f))
+ return -ENOMEM;
+
+ r = sd_bus_message_new_method_return(bus, m, &q);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(q, "s", i->introspection);
+ if (r < 0) {
+ sd_bus_message_unref(q);
+ return r;
+ }
+
+ *reply = q;
+ return 0;
+}
+
+void introspect_free(struct introspect *i) {
+ assert(i);
+
+ if (i->f)
+ fclose(i->f);
+
+ if (i->introspection)
+ free(i->introspection);
+
+ zero(*i);
+}
diff --git a/src/libsystemd-bus/bus-introspect.h b/src/libsystemd-bus/bus-introspect.h
new file mode 100644
index 0000000..48c3885
--- /dev/null
+++ b/src/libsystemd-bus/bus-introspect.h
@@ -0,0 +1,41 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+#include <stdio.h>
+
+#include "sd-bus.h"
+#include "set.h"
+
+struct introspect {
+ FILE *f;
+ char *introspection;
+ size_t size;
+};
+
+int introspect_begin(struct introspect *i);
+int introspect_write_default_interfaces(struct introspect *i, bool object_manager);
+int introspect_write_child_nodes(struct introspect *i, Set *s, const char *prefix);
+int introspect_write_interface(struct introspect *i, const char *interface, const sd_bus_vtable *v);
+int introspect_finish(struct introspect *i, sd_bus *bus, sd_bus_message *m, sd_bus_message **reply);
+void introspect_free(struct introspect *i);
diff --git a/src/libsystemd-bus/bus-message.c b/src/libsystemd-bus/bus-message.c
index 760a148..2cf1a7a 100644
--- a/src/libsystemd-bus/bus-message.c
+++ b/src/libsystemd-bus/bus-message.c
@@ -496,9 +496,13 @@ int sd_bus_message_new_method_call(
sd_bus_message *t;
int r;
- if (!path)
+ if (destination && !service_name_is_valid(destination))
return -EINVAL;
- if (!member)
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (interface && !interface_name_is_valid(interface))
+ return -EINVAL;
+ if (!member_name_is_valid(member))
return -EINVAL;
if (!m)
return -EINVAL;
@@ -627,6 +631,58 @@ fail:
return r;
}
+int sd_bus_message_new_method_errorf(
+ sd_bus *bus,
+ sd_bus_message *call,
+ sd_bus_message **m,
+ const char *name,
+ const char *format,
+ ...) {
+
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ sd_bus_message *t;
+ va_list ap;
+ int r;
+
+ if (!name)
+ return -EINVAL;
+ if (!m)
+ return -EINVAL;
+
+ r = message_new_reply(bus, call, SD_BUS_MESSAGE_TYPE_METHOD_ERROR, &t);
+ if (r < 0)
+ return r;
+
+ r = message_append_field_string(t, SD_BUS_MESSAGE_HEADER_ERROR_NAME, SD_BUS_TYPE_STRING, name, &t->error.name);
+ if (r < 0)
+ goto fail;
+
+ if (format) {
+ _cleanup_free_ char *message = NULL;
+
+ va_start(ap, format);
+ r = vasprintf(&message, format, ap);
+ va_end(ap);
+
+ if (r < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ r = message_append_basic(t, SD_BUS_TYPE_STRING, message, (const void**) &t->error.message);
+ if (r < 0)
+ goto fail;
+ }
+
+ *m = t;
+ return 0;
+
+fail:
+ message_free(t);
+ return r;
+}
+
+
int bus_message_new_synthetic_error(
sd_bus *bus,
uint64_t serial,
@@ -1558,7 +1614,7 @@ static int bus_message_open_array(
assert(contents);
assert(array_size);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, true))
return -EINVAL;
alignment = bus_type_get_alignment(contents[0]);
@@ -1629,7 +1685,7 @@ static int bus_message_open_variant(
assert(c);
assert(contents);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, false))
return -EINVAL;
if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
@@ -2704,7 +2760,7 @@ static int bus_message_enter_array(
assert(contents);
assert(array_size);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, true))
return -EINVAL;
alignment = bus_type_get_alignment(contents[0]);
@@ -2758,7 +2814,7 @@ static int bus_message_enter_variant(
assert(c);
assert(contents);
- if (!signature_is_single(contents))
+ if (!signature_is_single(contents, false))
return -EINVAL;
if (*contents == SD_BUS_TYPE_DICT_ENTRY_BEGIN)
@@ -4290,3 +4346,16 @@ int bus_message_to_errno(sd_bus_message *m) {
return bus_error_to_errno(&m->error);
}
+
+int sd_bus_message_get_signature(sd_bus_message *m, int complete, const char **signature) {
+ struct bus_container *c;
+
+ if (!m)
+ return -EINVAL;
+ if (!signature)
+ return -EINVAL;
+
+ c = complete ? &m->root_container : message_get_container(m);
+ *signature = c->signature ?: "";
+ return 0;
+}
diff --git a/src/libsystemd-bus/bus-signature.c b/src/libsystemd-bus/bus-signature.c
index a92b712..35c054b 100644
--- a/src/libsystemd-bus/bus-signature.c
+++ b/src/libsystemd-bus/bus-signature.c
@@ -110,13 +110,13 @@ int signature_element_length(const char *s, size_t *l) {
return signature_element_length_internal(s, true, 0, 0, l);
}
-bool signature_is_single(const char *s) {
+bool signature_is_single(const char *s, bool allow_dict_entry) {
int r;
size_t t;
assert(s);
- r = signature_element_length(s, &t);
+ r = signature_element_length_internal(s, allow_dict_entry, 0, 0, &t);
if (r < 0)
return false;
@@ -129,7 +129,7 @@ bool signature_is_pair(const char *s) {
if (!bus_type_is_basic(*s))
return false;
- return signature_is_single(s + 1);
+ return signature_is_single(s + 1, false);
}
bool signature_is_valid(const char *s, bool allow_dict_entry) {
diff --git a/src/libsystemd-bus/bus-signature.h b/src/libsystemd-bus/bus-signature.h
index 4000e06..2e06e30 100644
--- a/src/libsystemd-bus/bus-signature.h
+++ b/src/libsystemd-bus/bus-signature.h
@@ -24,7 +24,7 @@
#include <stdbool.h>
#include <sys/types.h>
-bool signature_is_single(const char *s);
+bool signature_is_single(const char *s, bool allow_dict_entry);
bool signature_is_pair(const char *s);
bool signature_is_valid(const char *s, bool allow_dict_entry);
diff --git a/src/libsystemd-bus/sd-bus.c b/src/libsystemd-bus/sd-bus.c
index db0880f..b1dcd8d 100644
--- a/src/libsystemd-bus/sd-bus.c
+++ b/src/libsystemd-bus/sd-bus.c
@@ -42,6 +42,8 @@
#include "bus-socket.h"
#include "bus-kernel.h"
#include "bus-control.h"
+#include "bus-introspect.h"
+#include "bus-signature.h"
static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec);
@@ -57,9 +59,46 @@ static void bus_close_fds(sd_bus *b) {
b->input_fd = b->output_fd = -1;
}
+static void bus_node_destroy(sd_bus *b, struct node *n) {
+ struct node_callback *c;
+ struct node_vtable *v;
+ struct node_enumerator *e;
+
+ assert(b);
+
+ if (!n)
+ return;
+
+ while (n->child)
+ bus_node_destroy(b, n->child);
+
+ while ((c = n->callbacks)) {
+ LIST_REMOVE(struct node_callback, callbacks, n->callbacks, c);
+ free(c);
+ }
+
+ while ((v = n->vtables)) {
+ LIST_REMOVE(struct node_vtable, vtables, n->vtables, v);
+ free(v->interface);
+ free(v);
+ }
+
+ while ((e = n->enumerators)) {
+ LIST_REMOVE(struct node_enumerator, enumerators, n->enumerators, e);
+ free(e);
+ }
+
+ if (n->parent)
+ LIST_REMOVE(struct node, siblings, n->parent->child, n);
+
+ assert_se(hashmap_remove(b->nodes, n->path) == n);
+ free(n->path);
+ free(n);
+}
+
static void bus_free(sd_bus *b) {
struct filter_callback *f;
- struct object_callback *c;
+ struct node *n;
unsigned i;
assert(b);
@@ -97,14 +136,16 @@ static void bus_free(sd_bus *b) {
free(f);
}
- while ((c = hashmap_steal_first(b->object_callbacks))) {
- free(c->path);
- free(c);
- }
-
- hashmap_free(b->object_callbacks);
bus_match_free(&b->match_callbacks);
+ hashmap_free_free(b->vtable_methods);
+ hashmap_free_free(b->vtable_properties);
+
+ while ((n = hashmap_first(b->nodes)))
+ bus_node_destroy(b, n);
+
+ hashmap_free(b->nodes);
+
bus_kernel_flush_memfd(b);
assert_se(pthread_mutex_destroy(&b->memfd_cache_mutex) == 0);
@@ -1818,13 +1859,10 @@ static int process_builtin(sd_bus *bus, sd_bus_message *m) {
r = sd_bus_message_append(reply, "s", sd_id128_to_string(id, sid));
} else {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-
- sd_bus_error_set(&error,
- "org.freedesktop.DBus.Error.UnknownMethod",
+ r = sd_bus_message_new_method_errorf(
+ bus, m, &reply,
+ "org.freedesktop.DBus.Error.UnknownMethod",
"Unknown method '%s' on interface '%s'.", m->member, m->interface);
-
- r = sd_bus_message_new_method_error(bus, m, &error, &reply);
}
if (r < 0)
@@ -1837,779 +1875,2398 @@ static int process_builtin(sd_bus *bus, sd_bus_message *m) {
return 1;
}
-static int process_object(sd_bus *bus, sd_bus_message *m) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- struct object_callback *c;
+static int node_vtable_get_userdata(
+ sd_bus *bus,
+ const char *path,
+ struct node_vtable *c,
+ void **userdata) {
+
+ void *u;
int r;
- bool found = false;
- size_t pl;
assert(bus);
- assert(m);
+ assert(path);
+ assert(c);
+ assert(userdata);
+
+ u = c->userdata;
+ if (c->find) {
+ r = c->find(bus, path, c->interface, &u, u);
+ if (r <= 0)
+ return r;
+ }
- if (m->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
- return 0;
+ *userdata = u;
+ return 1;
+}
- if (hashmap_isempty(bus->object_callbacks))
- return 0;
+static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) {
+ assert(p);
- pl = strlen(m->path);
+ return (uint8_t*) u + p->property.offset;
+}
- do {
- char p[pl+1];
+static int vtable_property_get_userdata(
+ sd_bus *bus,
+ const char *path,
+ struct vtable_member *p,
+ void **userdata) {
- bus->object_callbacks_modified = false;
+ void *u;
+ int r;
- c = hashmap_get(bus->object_callbacks, m->path);
- if (c && c->last_iteration != bus->iteration_counter) {
+ assert(bus);
+ assert(path);
+ assert(p);
+ assert(userdata);
- c->last_iteration = bus->iteration_counter;
+ r = node_vtable_get_userdata(bus, path, p->parent, &u);
+ if (r <= 0)
+ return r;
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
+ *userdata = vtable_property_convert_userdata(p->vtable, u);
+ return 1;
+}
- r = c->callback(bus, m, c->userdata);
- if (r != 0)
- return r;
+static int add_enumerated_to_set(sd_bus *bus, const char *prefix, struct node_enumerator *first, Set *s) {
+ struct node_enumerator *c;
+ int r;
- found = true;
- }
+ assert(bus);
+ assert(prefix);
+ assert(s);
- /* Look for fallback prefixes */
- strcpy(p, m->path);
- for (;;) {
- char *e;
+ LIST_FOREACH(enumerators, c, first) {
+ char **children = NULL, **k;
- if (bus->object_callbacks_modified)
- break;
+ r = c->callback(bus, prefix, &children, c->userdata);
+ if (r < 0)
+ return r;
- e = strrchr(p, '/');
- if (e == p || !e)
- break;
+ STRV_FOREACH(k, children) {
+ if (r < 0) {
+ free(*k);
+ continue;
+ }
- *e = 0;
+ if (!object_path_is_valid(*k) && object_path_startswith(*k, prefix)) {
+ free(*k);
+ r = -EINVAL;
+ continue;
+ }
- c = hashmap_get(bus->object_callbacks, p);
- if (c && c->last_iteration != bus->iteration_counter && c->is_fallback) {
+ r = set_consume(s, *k);
+ }
- c->last_iteration = bus->iteration_counter;
+ free(children);
+ if (r < 0)
+ return r;
+ }
- r = sd_bus_message_rewind(m, true);
- if (r < 0)
- return r;
+ return 0;
+}
- r = c->callback(bus, m, c->userdata);
- if (r != 0)
- return r;
+static int add_subtree_to_set(sd_bus *bus, const char *prefix, struct node *n, Set *s) {
+ struct node *i;
+ int r;
- found = true;
- }
- }
+ assert(bus);
+ assert(prefix);
+ assert(n);
+ assert(s);
- } while (bus->object_callbacks_modified);
+ r = add_enumerated_to_set(bus, prefix, n->enumerators, s);
+ if (r < 0)
+ return r;
- /* We found some handlers but none wanted to take this, then
- * return this -- with one exception, we can handle
- * introspection minimally ourselves */
- if (!found || sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect"))
- return 0;
+ LIST_FOREACH(siblings, i, n->child) {
+ char *t;
- sd_bus_error_set(&error,
- "org.freedesktop.DBus.Error.UnknownMethod",
- "Unknown method '%s' or interface '%s'.", m->member, m->interface);
+ t = strdup(i->path);
+ if (!t)
+ return -ENOMEM;
- r = sd_bus_message_new_method_error(bus, m, &error, &reply);
- if (r < 0)
- return r;
+ r = set_consume(s, t);
+ if (r < 0 && r != -EEXIST)
+ return r;
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
+ r = add_subtree_to_set(bus, prefix, i, s);
+ if (r < 0)
+ return r;
+ }
- return 1;
+ return 0;
}
-static int process_introspect(sd_bus *bus, sd_bus_message *m) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_free_ char *introspection = NULL;
- _cleanup_set_free_free_ Set *s = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- struct object_callback *c;
- Iterator i;
- size_t size = 0;
- char *node;
+static int get_child_nodes(sd_bus *bus, const char *prefix, struct node *n, Set **_s) {
+ Set *s = NULL;
int r;
assert(bus);
- assert(m);
-
- if (!sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect"))
- return 0;
-
- if (!m->path)
- return 0;
+ assert(n);
+ assert(_s);
s = set_new(string_hash_func, string_compare_func);
if (!s)
return -ENOMEM;
- HASHMAP_FOREACH(c, bus->object_callbacks, i) {
- const char *e;
- char *a, *p;
-
- if (streq(c->path, "/"))
- continue;
-
- if (streq(m->path, "/"))
- e = c->path;
- else {
- e = startswith(c->path, m->path);
- if (!e || *e != '/')
- continue;
- }
-
- a = strdup(e+1);
- if (!a)
- return -ENOMEM;
-
- p = strchr(a, '/');
- if (p)
- *p = 0;
-
- r = set_consume(s, a);
- if (r < 0 && r != -EEXIST)
- return r;
+ r = add_subtree_to_set(bus, prefix, n, s);
+ if (r < 0) {
+ set_free_free(s);
+ return r;
}
- f = open_memstream(&introspection, &size);
- if (!f)
- return -ENOMEM;
+ *_s = s;
+ return 0;
+}
- fputs(SD_BUS_INTROSPECT_DOCTYPE, f);
- fputs("<node>\n", f);
- fputs(SD_BUS_INTROSPECT_INTERFACE_PEER, f);
- fputs(SD_BUS_INTROSPECT_INTERFACE_INTROSPECTABLE, f);
+static int node_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node_callback *first,
+ bool require_fallback,
+ bool *found_object) {
- while ((node = set_steal_first(s))) {
- fprintf(f, " <node name=\"%s\"/>\n", node);
- free(node);
- }
+ struct node_callback *c;
+ int r;
- fputs("</node>\n", f);
+ assert(bus);
+ assert(m);
+ assert(found_object);
- fflush(f);
+ LIST_FOREACH(callbacks, c, first) {
+ if (require_fallback && !c->is_fallback)
+ continue;
- if (ferror(f))
- return -ENOMEM;
+ *found_object = true;
- r = sd_bus_message_new_method_return(bus, m, &reply);
- if (r < 0)
- return r;
+ if (c->last_iteration == bus->iteration_counter)
+ continue;
- r = sd_bus_message_append(reply, "s", introspection);
- if (r < 0)
- return r;
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
- r = sd_bus_send(bus, reply, NULL);
- if (r < 0)
- return r;
+ r = c->callback(bus, m, c->userdata);
+ if (r != 0)
+ return r;
+ }
- return 1;
+ return 0;
}
-static int process_message(sd_bus *bus, sd_bus_message *m) {
+static int method_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct vtable_member *c,
+ bool require_fallback,
+ bool *found_object) {
+
+ const char *signature;
+ void *u;
int r;
assert(bus);
assert(m);
+ assert(c);
+ assert(found_object);
- bus->iteration_counter++;
+ if (require_fallback && !c->parent->is_fallback)
+ return 0;
- r = process_hello(bus, m);
- if (r != 0)
+ r = node_vtable_get_userdata(bus, m->path, c->parent, &u);
+ if (r <= 0)
return r;
- r = process_reply(bus, m);
- if (r != 0)
- return r;
+ *found_object = true;
- r = process_filter(bus, m);
- if (r != 0)
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
return r;
- r = process_match(bus, m);
- if (r != 0)
+ r = sd_bus_message_get_signature(m, true, &signature);
+ if (r < 0)
return r;
- r = process_builtin(bus, m);
- if (r != 0)
- return r;
+ if (!streq(c->vtable->method.signature, signature)) {
+ r = sd_bus_reply_method_errorf(bus, m,
+ "org.freedesktop.DBus.Error.InvalidArgs",
+ "Invalid arguments '%s' to call %s:%s, expecting '%s'.",
+ signature, c->interface, c->member, c->vtable->method.signature);
+ if (r < 0)
+ return r;
- r = process_object(bus, m);
- if (r != 0)
- return r;
+ return 1;
+ }
- return process_introspect(bus, m);
+ return c->vtable->method.handler(bus, m, u);
}
-static int process_running(sd_bus *bus, sd_bus_message **ret) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+static int property_get_set_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct vtable_member *c,
+ bool require_fallback,
+ bool is_get,
+ bool *found_object) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ void *u;
int r;
assert(bus);
- assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+ assert(m);
+ assert(found_object);
- r = process_timeout(bus);
- if (r != 0)
- goto null_message;
+ if (require_fallback && !c->parent->is_fallback)
+ return 0;
- r = dispatch_wqueue(bus);
- if (r != 0)
- goto null_message;
+ r = vtable_property_get_userdata(bus, m->path, c, &u);
+ if (r <= 0)
+ return r;
- r = dispatch_rqueue(bus, &m);
+ *found_object = true;
+
+ r = sd_bus_message_new_method_return(bus, m, &reply);
if (r < 0)
return r;
- if (!m)
- goto null_message;
- r = process_message(bus, m);
- if (r != 0)
- goto null_message;
+ c->last_iteration = bus->iteration_counter;
- if (ret) {
- r = sd_bus_message_rewind(m, true);
+ if (is_get) {
+ r = sd_bus_message_open_container(reply, 'v', c->vtable->property.signature);
if (r < 0)
return r;
- *ret = m;
- m = NULL;
- return 1;
- }
+ if (c->vtable->property.get) {
+ r = c->vtable->property.get(bus, m->path, c->interface, c->member, reply, &error, u);
+ if (r < 0)
+ return r;
+ } else
+ assert_not_reached("automatic properties not supported yet");
- if (m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_CALL) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ if (sd_bus_error_is_set(&error)) {
+ r = sd_bus_reply_method_error(bus, m, &error);
+ if (r < 0)
+ return r;
- sd_bus_error_set(&error, "org.freedesktop.DBus.Error.UnknownObject", "Unknown object '%s'.", m->path);
+ return 1;
+ }
- r = sd_bus_message_new_method_error(bus, m, &error, &reply);
+ r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
- r = sd_bus_send(bus, reply, NULL);
+ } else {
+ if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ sd_bus_error_setf(&error, "org.freedesktop.DBus.Error.PropertyReadOnly", "Property '%s' is not writable.", c->member);
+ else {
+ r = sd_bus_message_enter_container(m, 'v', c->vtable->property.signature);
+ if (r < 0)
+ return r;
+
+ if (c->vtable->property.set) {
+ r = c->vtable->property.set(bus, m->path, c->interface, c->member, m, &error, u);
+ if (r < 0)
+ return r;
+ } else
+ assert_not_reached("automatic properties not supported yet");
+ }
+
+ if (sd_bus_error_is_set(&error)) {
+ r = sd_bus_reply_method_error(bus, m, &error);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
}
- return 1;
-
-null_message:
- if (r >= 0 && ret)
- *ret = NULL;
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
- return r;
+ return 1;
}
-int sd_bus_process(sd_bus *bus, sd_bus_message **ret) {
+static int vtable_append_all_properties(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ struct node_vtable *c,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const sd_bus_vtable *v;
int r;
- /* Returns 0 when we didn't do anything. This should cause the
- * caller to invoke sd_bus_wait() before returning the next
+ assert(bus);
+ assert(reply);
+ assert(c);
+
+ for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
+ if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
+ continue;
+
+ r = sd_bus_message_open_container(reply, 'e', "sv");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", c->interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'v', v->property.signature);
+ if (r < 0)
+ return r;
+
+ r = v->property.get(bus, path, c->interface, v->property.member, reply, error, vtable_property_convert_userdata(v, userdata));
+ if (r < 0)
+ return r;
+
+ if (sd_bus_error_is_set(error))
+ return 0;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+}
+
+static int property_get_all_callbacks_run(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node_vtable *first,
+ bool require_fallback,
+ const char *iface,
+ bool *found_object) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ struct node_vtable *c;
+ bool found_interface = false;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(found_object);
+
+ r = sd_bus_message_new_method_return(bus, m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(vtables, c, first) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ void *u;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, m->path, c, &u);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ *found_object = true;
+
+ if (iface && !streq(c->interface, iface))
+ continue;
+ found_interface = true;
+
+ c->last_iteration = bus->iteration_counter;
+
+ r = vtable_append_all_properties(bus, reply, m->path, c, u, &error);
+ if (r < 0)
+ return r;
+
+ if (sd_bus_error_is_set(&error)) {
+ r = sd_bus_reply_method_error(bus, m, &error);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+ }
+
+ if (!found_interface) {
+ r = sd_bus_reply_method_errorf(
+ bus, m,
+ "org.freedesktop.DBus.Error.UnknownInterface",
+ "Unknown interface '%s'.", iface);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) {
+ assert(bus);
+
+ if (n->object_manager)
+ return true;
+
+ if (n->parent)
+ return bus_node_with_object_manager(bus, n->parent);
+
+ return false;
+}
+
+static bool bus_node_exists(sd_bus *bus, struct node *n, const char *path, bool require_fallback) {
+ struct node_vtable *c;
+ struct node_callback *k;
+
+ assert(bus);
+ assert(n);
+
+ if (n->child)
+ return true;
+
+ LIST_FOREACH(callbacks, k, n->callbacks) {
+ if (require_fallback && !k->is_fallback)
+ continue;
+
+ return true;
+ }
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ return true;
+ }
+
+ return !require_fallback && (n->enumerators || n->object_manager);
+
+}
+
+static int process_introspect(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node *n,
+ bool require_fallback,
+ bool *found_object) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_set_free_free_ Set *s = NULL;
+ struct introspect intro;
+ struct node_vtable *c;
+ bool empty;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(n);
+ assert(found_object);
+
+ r = get_child_nodes(bus, m->path, n, &s);
+ if (r < 0)
+ return r;
+
+ r = introspect_begin(&intro);
+ if (r < 0)
+ return r;
+
+ r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n));
+ if (r < 0)
+ return r;
+
+ empty = set_isempty(s);
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ void *u;
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ r = node_vtable_get_userdata(bus, m->path, c, &u);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ empty = false;
+
+ r = introspect_write_interface(&intro, c->interface, c->vtable);
+ if (r < 0)
+ goto finish;
+ }
+
+ if (empty) {
+ /* Nothing?, let's see if we exist at all, and if not
+ * refuse to do anything */
+ r = bus_node_exists(bus, n, m->path, require_fallback);
+ if (r < 0)
+ return r;
+
+ if (r == 0)
+ goto finish;
+ }
+
+ *found_object = true;
+
+ r = introspect_write_child_nodes(&intro, s, m->path);
+ if (r < 0)
+ goto finish;
+
+ r = introspect_finish(&intro, bus, m, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ goto finish;
+
+ r = 1;
+
+finish:
+ introspect_free(&intro);
+ return r;
+}
+
+static int object_manager_serialize_vtable(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ struct node_vtable *c,
+ sd_bus_error *error) {
+
+ void *u;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(c);
+ assert(error);
+
+ r = node_vtable_get_userdata(bus, path, c, &u);
+ if (r <= 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", c->interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ r = vtable_append_all_properties(bus, reply, path, c, u, error);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int object_manager_serialize_path(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ bool require_fallback,
+ sd_bus_error *error) {
+
+ struct node_vtable *i;
+ struct node *n;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(error);
+
+ n = hashmap_get(bus->nodes, path);
+ if (!n)
+ return 0;
+
+ r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "o", path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(vtables, i, n->vtables) {
+
+ if (require_fallback && !i->is_fallback)
+ continue;
+
+ r = object_manager_serialize_vtable(bus, reply, path, i, error);
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return 0;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int object_manager_serialize_path_and_fallbacks(
+ sd_bus *bus,
+ sd_bus_message *reply,
+ const char *path,
+ sd_bus_error *error) {
+
+ size_t pl;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(path);
+ assert(error);
+
+ /* First, add all vtables registered for this path */
+ r = object_manager_serialize_path(bus, reply, path, false, error);
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(error))
+ return 0;
+
+ /* Second, add fallback vtables registered for any of the prefixes */
+ pl = strlen(path);
+ if (pl > 1) {
+ char p[pl + 1];
+ strcpy(p, path);
+
+ for (;;) {
+ char *e;
+
+ e = strrchr(p, '/');
+ if (e == p || !e)
+ break;
+
+ *e = 0;
+
+ r = object_manager_serialize_path(bus, reply, p, true, error);
+ if (r < 0)
+ return r;
+
+ if (sd_bus_error_is_set(error))
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static int process_get_managed_objects(
+ sd_bus *bus,
+ sd_bus_message *m,
+ struct node *n,
+ bool require_fallback,
+ bool *found_object) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_set_free_free_ Set *s = NULL;
+ bool empty;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(n);
+ assert(found_object);
+
+ if (!bus_node_with_object_manager(bus, n))
+ return 0;
+
+ r = get_child_nodes(bus, m->path, n, &s);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_new_method_return(bus, m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}");
+ if (r < 0)
+ return r;
+
+ empty = set_isempty(s);
+ if (empty) {
+ struct node_vtable *c;
+
+ /* Hmm, so we have no children? Then let's check
+ * whether we exist at all, i.e. whether at least one
+ * vtable exists. */
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ empty = false;
+ break;
+ }
+
+ if (empty)
+ return 0;
+ } else {
+ Iterator i;
+ char *path;
+
+ SET_FOREACH(path, s, i) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+
+ r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error);
+ if (r < 0)
+ return -ENOMEM;
+
+ if (sd_bus_error_is_set(&error)) {
+ r = sd_bus_reply_method_error(bus, m, &error);
+ if (r < 0)
+ return r;
+
+ return 1;
+ }
+ }
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, reply, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int object_find_and_run(sd_bus *bus, sd_bus_message *m, const char *p, bool require_fallback, bool *found_object) {
+ struct node *n;
+ struct vtable_member vtable_key, *v;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(p);
+ assert(found_object);
+
+ n = hashmap_get(bus->nodes, p);
+ if (!n)
+ return 0;
+
+ /* First, try object callbacks */
+ r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object);
+ if (r != 0)
+ return r;
+
+ if (!m->interface || !m->member)
+ return 0;
+
+ /* Then, look for a known method */
+ vtable_key.path = (char*) p;
+ vtable_key.interface = m->interface;
+ vtable_key.member = m->member;
+
+ v = hashmap_get(bus->vtable_methods, &vtable_key);
+ if (v) {
+ r = method_callbacks_run(bus, m, v, require_fallback, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ /* Then, look for a known property */
+ if (streq(m->interface, "org.freedesktop.DBus.Properties")) {
+ bool get = false;
+
+ get = streq(m->member, "Get");
+
+ if (get || streq(m->member, "Set")) {
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ vtable_key.path = (char*) p;
+
+ r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member);
+ if (r < 0)
+ return r;
+
+ v = hashmap_get(bus->vtable_properties, &vtable_key);
+ if (v) {
+ r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } else if (streq(m->member, "GetAll")) {
+ const char *iface;
+
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(m, "s", &iface);
+ if (r < 0)
+ return r;
+
+ if (iface[0] == 0)
+ iface = NULL;
+
+ r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
+
+ r = process_introspect(bus, m, n, require_fallback, found_object);
+ if (r != 0)
+ return r;
+
+ } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) {
+
+ r = process_get_managed_objects(bus, m, n, require_fallback, found_object);
+ if (r != 0)
+ return r;
+ }
+
+ if (!*found_object) {
+ r = bus_node_exists(bus, n, m->path, require_fallback);
+ if (r < 0)
+ return r;
+
+ if (r > 0)
+ *found_object = true;
+ }
+
+ return 0;
+}
+
+static int process_object(sd_bus *bus, sd_bus_message *m) {
+ int r;
+ size_t pl;
+ bool found_object = false;
+
+ assert(bus);
+ assert(m);
+
+ if (m->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
+ return 0;
+
+ if (!m->path)
+ return 0;
+
+ if (hashmap_isempty(bus->nodes))
+ return 0;
+
+ pl = strlen(m->path);
+ do {
+ char p[pl+1];
+
+ bus->nodes_modified = false;
+
+ r = object_find_and_run(bus, m, m->path, false, &found_object);
+ if (r != 0)
+ return r;
+
+ /* Look for fallback prefixes */
+ strcpy(p, m->path);
+ for (;;) {
+ char *e;
+
+ if (streq(p, "/"))
+ break;
+
+ if (bus->nodes_modified)
+ break;
+
+ e = strrchr(p, '/');
+ assert(e);
+ if (e == p)
+ *(e+1) = 0;
+ else
+ *e = 0;
+
+ r = object_find_and_run(bus, m, p, true, &found_object);
+ if (r != 0)
+ return r;
+ }
+
+ } while (bus->nodes_modified);
+
+ if (!found_object)
+ return 0;
+
+ if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") ||
+ sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set"))
+ r = sd_bus_reply_method_errorf(
+ bus, m,
+ "org.freedesktop.DBus.Error.UnknownProperty",
+ "Unknown property or interface.");
+ else
+ r = sd_bus_reply_method_errorf(
+ bus, m,
+ "org.freedesktop.DBus.Error.UnknownMethod",
+ "Unknown method '%s' or interface '%s'.", m->member, m->interface);
+
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int process_message(sd_bus *bus, sd_bus_message *m) {
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ bus->iteration_counter++;
+
+ r = process_hello(bus, m);
+ if (r != 0)
+ return r;
+
+ r = process_reply(bus, m);
+ if (r != 0)
+ return r;
+
+ r = process_filter(bus, m);
+ if (r != 0)
+ return r;
+
+ r = process_match(bus, m);
+ if (r != 0)
+ return r;
+
+ r = process_builtin(bus, m);
+ if (r != 0)
+ return r;
+
+ return process_object(bus, m);
+}
+
+static int process_running(sd_bus *bus, sd_bus_message **ret) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ int r;
+
+ assert(bus);
+ assert(bus->state == BUS_RUNNING || bus->state == BUS_HELLO);
+
+ r = process_timeout(bus);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_wqueue(bus);
+ if (r != 0)
+ goto null_message;
+
+ r = dispatch_rqueue(bus, &m);
+ if (r < 0)
+ return r;
+ if (!m)
+ goto null_message;
+
+ r = process_message(bus, m);
+ if (r != 0)
+ goto null_message;
+
+ if (ret) {
+ r = sd_bus_message_rewind(m, true);
+ if (r < 0)
+ return r;
+
+ *ret = m;
+ m = NULL;
+ return 1;
+ }
+
+ if (m->header->type == SD_BUS_MESSAGE_TYPE_METHOD_CALL) {
+
+ r = sd_bus_reply_method_errorf(
+ bus, m,
+ "org.freedesktop.DBus.Error.UnknownObject",
+ "Unknown object '%s'.", m->path);
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+
+null_message:
+ if (r >= 0 && ret)
+ *ret = NULL;
+
+ return r;
+}
+
+int sd_bus_process(sd_bus *bus, sd_bus_message **ret) {
+ int r;
+
+ /* Returns 0 when we didn't do anything. This should cause the
+ * caller to invoke sd_bus_wait() before returning the next
* time. Returns > 0 when we did something, which possibly
* means *ret is filled in with an unprocessed message. */
- if (!bus)
- return -EINVAL;
- if (bus_pid_changed(bus))
- return -ECHILD;
+ if (!bus)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ /* We don't allow recursively invoking sd_bus_process(). */
+ if (bus->processing)
+ return -EBUSY;
+
+ switch (bus->state) {
+
+ case BUS_UNSET:
+ case BUS_CLOSED:
+ return -ENOTCONN;
+
+ case BUS_OPENING:
+ r = bus_socket_process_opening(bus);
+ if (r < 0)
+ return r;
+ if (ret)
+ *ret = NULL;
+ return r;
+
+ case BUS_AUTHENTICATING:
+
+ r = bus_socket_process_authenticating(bus);
+ if (r < 0)
+ return r;
+ if (ret)
+ *ret = NULL;
+ return r;
+
+ case BUS_RUNNING:
+ case BUS_HELLO:
+
+ bus->processing = true;
+ r = process_running(bus, ret);
+ bus->processing = false;
+
+ return r;
+ }
+
+ assert_not_reached("Unknown state");
+}
+
+static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) {
+ struct pollfd p[2] = {};
+ int r, e, n;
+ struct timespec ts;
+ usec_t until, m;
+
+ assert(bus);
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
+ e = sd_bus_get_events(bus);
+ if (e < 0)
+ return e;
+
+ if (need_more)
+ e |= POLLIN;
+
+ r = sd_bus_get_timeout(bus, &until);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ m = (uint64_t) -1;
+ else {
+ usec_t nw;
+ nw = now(CLOCK_MONOTONIC);
+ m = until > nw ? until - nw : 0;
+ }
+
+ if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m))
+ m = timeout_usec;
+
+ p[0].fd = bus->input_fd;
+ if (bus->output_fd == bus->input_fd) {
+ p[0].events = e;
+ n = 1;
+ } else {
+ p[0].events = e & POLLIN;
+ p[1].fd = bus->output_fd;
+ p[1].events = e & POLLOUT;
+ n = 2;
+ }
+
+ r = ppoll(p, n, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL);
+ if (r < 0)
+ return -errno;
+
+ return r > 0 ? 1 : 0;
+}
+
+int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) {
+
+ if (!bus)
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ if (bus->rqueue_size > 0)
+ return 0;
+
+ return bus_poll(bus, false, timeout_usec);
+}
+
+int sd_bus_flush(sd_bus *bus) {
+ int r;
+
+ if (!bus)
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = bus_ensure_running(bus);
+ if (r < 0)
+ return r;
+
+ if (bus->wqueue_size <= 0)
+ return 0;
+
+ for (;;) {
+ r = dispatch_wqueue(bus);
+ if (r < 0)
+ return r;
+
+ if (bus->wqueue_size <= 0)
+ return 0;
+
+ r = bus_poll(bus, false, (uint64_t) -1);
+ if (r < 0)
+ return r;
+ }
+}
+
+int sd_bus_add_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata) {
+ struct filter_callback *f;
+
+ if (!bus)
+ return -EINVAL;
+ if (!callback)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ f = new0(struct filter_callback, 1);
+ if (!f)
+ return -ENOMEM;
+ f->callback = callback;
+ f->userdata = userdata;
+
+ bus->filter_callbacks_modified = true;
+ LIST_PREPEND(struct filter_callback, callbacks, bus->filter_callbacks, f);
+ return 0;
+}
+
+int sd_bus_remove_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata) {
+ struct filter_callback *f;
+
+ if (!bus)
+ return -EINVAL;
+ if (!callback)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ LIST_FOREACH(callbacks, f, bus->filter_callbacks) {
+ if (f->callback == callback && f->userdata == userdata) {
+ bus->filter_callbacks_modified = true;
+ LIST_REMOVE(struct filter_callback, callbacks, bus->filter_callbacks, f);
+ free(f);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static struct node *bus_node_allocate(sd_bus *bus, const char *path) {
+ struct node *n, *parent;
+ const char *e;
+ char *s, *p;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(path[0] == '/');
+
+ n = hashmap_get(bus->nodes, path);
+ if (n)
+ return n;
+
+ r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func);
+ if (r < 0)
+ return NULL;
+
+ s = strdup(path);
+ if (!s)
+ return NULL;
+
+ if (streq(path, "/"))
+ parent = NULL;
+ else {
+ e = strrchr(path, '/');
+ assert(e);
+
+ p = strndupa(path, MAX(1, path - e));
+
+ parent = bus_node_allocate(bus, p);
+ if (!parent) {
+ free(s);
+ return NULL;
+ }
+ }
+
+ n = new0(struct node, 1);
+ if (!n)
+ return NULL;
+
+ n->parent = parent;
+ n->path = s;
+
+ r = hashmap_put(bus->nodes, s, n);
+ if (r < 0) {
+ free(s);
+ free(n);
+ return NULL;
+ }
+
+ if (parent)
+ LIST_PREPEND(struct node, siblings, parent->child, n);
+
+ return n;
+}
+
+static void bus_node_gc(sd_bus *b, struct node *n) {
+ assert(b);
+
+ if (!n)
+ return;
+
+ if (n->child ||
+ n->callbacks ||
+ n->vtables ||
+ n->enumerators ||
+ n->object_manager)
+ return;
+
+ assert(hashmap_remove(b->nodes, n->path) == n);
+
+ if (n->parent)
+ LIST_REMOVE(struct node, siblings, n->parent->child, n);
+
+ free(n->path);
+ bus_node_gc(b, n->parent);
+ free(n);
+}
+
+static int bus_add_object(
+ sd_bus *b,
+ bool fallback,
+ const char *path,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ struct node_callback *c;
+ struct node *n;
+ int r;
+
+ if (!b)
+ return -EINVAL;
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (!callback)
+ return -EINVAL;
+ if (bus_pid_changed(b))
+ return -ECHILD;
+
+ n = bus_node_allocate(b, path);
+ if (!n)
+ return -ENOMEM;
+
+ c = new0(struct node_callback, 1);
+ if (!c) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ c->node = n;
+ c->callback = callback;
+ c->userdata = userdata;
+ c->is_fallback = fallback;
+
+ LIST_PREPEND(struct node_callback, callbacks, n->callbacks, c);
+ return 0;
+
+fail:
+ free(c);
+ bus_node_gc(b, n);
+ return r;
+}
+
+static int bus_remove_object(
+ sd_bus *bus,
+ bool fallback,
+ const char *path,
+ sd_bus_message_handler_t callback,
+ void *userdata) {
+
+ struct node_callback *c;
+ struct node *n;
+
+ if (!bus)
+ return -EINVAL;
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (!callback)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ n = hashmap_get(bus->nodes, path);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(callbacks, c, n->callbacks)
+ if (c->callback == callback && c->userdata == userdata && c->is_fallback == fallback)
+ break;
+ if (!c)
+ return 0;
+
+ LIST_REMOVE(struct node_callback, callbacks, n->callbacks, c);
+ free(c);
+
+ bus_node_gc(bus, n);
+
+ return 1;
+}
+
+int sd_bus_add_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata) {
+ return bus_add_object(bus, false, path, callback, userdata);
+}
+
+int sd_bus_remove_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata) {
+ return bus_remove_object(bus, false, path, callback, userdata);
+}
+
+int sd_bus_add_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata) {
+ return bus_add_object(bus, true, prefix, callback, userdata);
+}
+
+int sd_bus_remove_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata) {
+ return bus_remove_object(bus, true, prefix, callback, userdata);
+}
+
+int sd_bus_add_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata) {
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+ uint64_t cookie = 0;
+ int r = 0;
+
+ if (!bus)
+ return -EINVAL;
+ if (!match)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = bus_match_parse(match, &components, &n_components);
+ if (r < 0)
+ goto finish;
+
+ if (bus->bus_client) {
+ cookie = ++bus->match_cookie;
+
+ r = bus_add_match_internal(bus, match, components, n_components, cookie);
+ if (r < 0)
+ goto finish;
+ }
+
+ bus->match_callbacks_modified = true;
+ r = bus_match_add(&bus->match_callbacks, components, n_components, callback, userdata, cookie, NULL);
+ if (r < 0) {
+ if (bus->bus_client)
+ bus_remove_match_internal(bus, match, cookie);
+ }
+
+finish:
+ bus_match_parse_free(components, n_components);
+ return r;
+}
+
+int sd_bus_remove_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata) {
+ struct bus_match_component *components = NULL;
+ unsigned n_components = 0;
+ int r = 0, q = 0;
+ uint64_t cookie = 0;
+
+ if (!bus)
+ return -EINVAL;
+ if (!match)
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = bus_match_parse(match, &components, &n_components);
+ if (r < 0)
+ return r;
+
+ bus->match_callbacks_modified = true;
+ r = bus_match_remove(&bus->match_callbacks, components, n_components, callback, userdata, &cookie);
+
+ if (bus->bus_client)
+ q = bus_remove_match_internal(bus, match, cookie);
+
+ bus_match_parse_free(components, n_components);
+
+ return r < 0 ? r : q;
+}
+
+int sd_bus_emit_signal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *member,
+ const char *types, ...) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ va_list ap;
+ int r;
+
+ if (!bus)
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = sd_bus_message_new_signal(bus, path, interface, member, &m);
+ if (r < 0)
+ return r;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+int sd_bus_call_method(
+ sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const char *interface,
+ const char *member,
+ sd_bus_error *error,
+ sd_bus_message **reply,
+ const char *types, ...) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ va_list ap;
+ int r;
+
+ if (!bus)
+
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = sd_bus_message_new_method_call(bus, destination, path, interface, member, &m);
+ if (r < 0)
+ return r;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send_with_reply_and_block(bus, m, 0, error, reply);
+}
+
+int sd_bus_reply_method_return(
+ sd_bus *bus,
+ sd_bus_message *call,
+ const char *types, ...) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ va_list ap;
+ int r;
+
+ if (!bus)
+ return -EINVAL;
+ if (!call)
+ return -EINVAL;
+ if (!call->sealed)
+ return -EPERM;
+ if (call->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ if (call->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ r = sd_bus_message_new_method_return(bus, call, &m);
+ if (r < 0)
+ return r;
+
+ va_start(ap, types);
+ r = bus_message_append_ap(m, types, ap);
+ va_end(ap);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+int sd_bus_reply_method_error(
+ sd_bus *bus,
+ sd_bus_message *call,
+ const sd_bus_error *e) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ int r;
+
+ if (!bus)
+ return -EINVAL;
+ if (!call)
+ return -EINVAL;
+ if (!call->sealed)
+ return -EPERM;
+ if (call->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
+ return -EINVAL;
+ if (!sd_bus_error_is_set(e))
+ return -EINVAL;
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ if (call->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED)
+ return 0;
+
+ r = sd_bus_message_new_method_error(bus, call, e, &m);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+int sd_bus_reply_method_errorf(
+ sd_bus *bus,
+ sd_bus_message *call,
+ const char *name,
+ const char *format,
+ ...) {
+
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ char *n, *m;
+ va_list ap;
+ int r;
+
+ n = strdup(name);
+ if (!n)
+ return -ENOMEM;
+
+ if (format) {
+ va_start(ap, format);
+ r = vasprintf(&m, format, ap);
+ va_end(ap);
+
+ if (r < 0) {
+ free(n);
+ return -ENOMEM;
+ }
+ }
+
+ error.name = n;
+ error.message = m;
+ error.need_free = true;
+
+ return sd_bus_reply_method_error(bus, call, &error);
+}
+
+bool bus_pid_changed(sd_bus *bus) {
+ assert(bus);
+
+ /* We don't support people creating a bus connection and
+ * keeping it around over a fork(). Let's complain. */
+
+ return bus->original_pid != getpid();
+}
+
+static void free_node_vtable(sd_bus *bus, struct node_vtable *w) {
+ assert(bus);
+
+ if (!w)
+ return;
+
+ if (w->interface && w->node && w->vtable) {
+ const sd_bus_vtable *v;
+
+ for (v = w->vtable; v->type != _SD_BUS_VTABLE_END; w++) {
+ struct vtable_member *x = NULL;
+
+ switch (v->type) {
+
+ case _SD_BUS_VTABLE_METHOD: {
+ struct vtable_member key;
+
+ key.path = w->node->path;
+ key.interface = w->interface;
+ key.member = v->method.member;
+
+ x = hashmap_remove(bus->vtable_methods, &key);
+ break;
+ }
+
+ case _SD_BUS_VTABLE_PROPERTY:
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY: {
+ struct vtable_member key;
+
+ key.path = w->node->path;
+ key.interface = w->interface;
+ key.member = v->property.member;
+ x = hashmap_remove(bus->vtable_properties, &key);
+ break;
+ }}
+
+ free(x);
+ }
+ }
+
+ free(w->interface);
+ free(w);
+}
+
+static unsigned vtable_member_hash_func(const void *a) {
+ const struct vtable_member *m = a;
+
+ return
+ string_hash_func(m->path) ^
+ string_hash_func(m->interface) ^
+ string_hash_func(m->member);
+}
+
+static int vtable_member_compare_func(const void *a, const void *b) {
+ const struct vtable_member *x = a, *y = b;
+ int r;
+
+ r = strcmp(x->path, y->path);
+ if (r != 0)
+ return r;
+
+ r = strcmp(x->interface, y->interface);
+ if (r != 0)
+ return r;
+
+ return strcmp(x->member, y->member);
+}
+
+static int add_object_vtable_internal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ bool fallback,
+ sd_bus_object_find_t find,
+ void *userdata) {
+
+ struct node_vtable *c, *i;
+ const sd_bus_vtable *v;
+ struct node *n;
+ int r;
+
+ if (!bus)
+ return -EINVAL;
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (!interface_name_is_valid(interface))
+ return -EINVAL;
+ if (!vtable || vtable[0].type != _SD_BUS_VTABLE_START || vtable[0].start.element_size != sizeof(struct sd_bus_vtable))
+ return -EINVAL;
+ if (bus_pid_changed(bus))
+ return -ECHILD;
+
+ r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func);
+ if (r < 0)
+ return r;
+
+ r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func);
+ if (r < 0)
+ return r;
+
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ LIST_FOREACH(vtables, i, n->vtables) {
+ if (streq(i->interface, interface)) {
+ r = -EEXIST;
+ goto fail;
+ }
+
+ if (i->is_fallback != fallback) {
+ r = -EPROTOTYPE;
+ goto fail;
+ }
+ }
+
+ c = new0(struct node_vtable, 1);
+ if (!c) {
+ r = -ENOMEM;
+ goto fail;
+ }
- /* We don't allow recursively invoking sd_bus_process(). */
- if (bus->processing)
- return -EBUSY;
+ c->node = n;
+ c->is_fallback = fallback;
+ c->vtable = vtable;
+ c->userdata = userdata;
+ c->find = find;
- switch (bus->state) {
+ c->interface = strdup(interface);
+ if (!c->interface) {
+ r = -ENOMEM;
+ goto fail;
+ }
- case BUS_UNSET:
- case BUS_CLOSED:
- return -ENOTCONN;
+ for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) {
- case BUS_OPENING:
- r = bus_socket_process_opening(bus);
- if (r < 0)
- return r;
- if (ret)
- *ret = NULL;
- return r;
+ switch (v->type) {
- case BUS_AUTHENTICATING:
+ case _SD_BUS_VTABLE_METHOD: {
+ struct vtable_member *m;
- r = bus_socket_process_authenticating(bus);
- if (r < 0)
- return r;
- if (ret)
- *ret = NULL;
- return r;
+ if (!member_name_is_valid(v->method.member) ||
+ !signature_is_valid(v->method.signature, false) ||
+ !signature_is_valid(v->method.result, false) ||
+ !v->method.handler ||
+ v->flags & (SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY)) {
+ r = -EINVAL;
+ goto fail;
+ }
- case BUS_RUNNING:
- case BUS_HELLO:
+ m = new0(struct vtable_member, 1);
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
- bus->processing = true;
- r = process_running(bus, ret);
- bus->processing = false;
+ m->parent = c;
+ m->path = n->path;
+ m->interface = c->interface;
+ m->member = v->method.member;
+ m->vtable = v;
- return r;
- }
+ r = hashmap_put(bus->vtable_methods, m, m);
+ if (r < 0) {
+ free(m);
+ goto fail;
+ }
- assert_not_reached("Unknown state");
-}
+ break;
+ }
-static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) {
- struct pollfd p[2] = {};
- int r, e, n;
- struct timespec ts;
- usec_t until, m;
+ case _SD_BUS_VTABLE_PROPERTY:
+ case _SD_BUS_VTABLE_WRITABLE_PROPERTY: {
+ struct vtable_member *m;
- assert(bus);
+ if (!member_name_is_valid(v->property.member) ||
+ !signature_is_single(v->property.signature, false) ||
+ v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY ||
+ (v->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY && !(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))) {
+ r = -EINVAL;
+ goto fail;
+ }
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
- e = sd_bus_get_events(bus);
- if (e < 0)
- return e;
+ m = new0(struct vtable_member, 1);
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
- if (need_more)
- e |= POLLIN;
+ m->parent = c;
+ m->path = n->path;
+ m->interface = c->interface;
+ m->member = v->property.member;
+ m->vtable = v;
- r = sd_bus_get_timeout(bus, &until);
- if (r < 0)
- return r;
- if (r == 0)
- m = (uint64_t) -1;
- else {
- usec_t nw;
- nw = now(CLOCK_MONOTONIC);
- m = until > nw ? until - nw : 0;
- }
+ r = hashmap_put(bus->vtable_properties, m, m);
+ if (r < 0) {
+ free(m);
+ goto fail;
+ }
- if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m))
- m = timeout_usec;
+ break;
+ }
- p[0].fd = bus->input_fd;
- if (bus->output_fd == bus->input_fd) {
- p[0].events = e;
- n = 1;
- } else {
- p[0].events = e & POLLIN;
- p[1].fd = bus->output_fd;
- p[1].events = e & POLLOUT;
- n = 2;
+ case _SD_BUS_VTABLE_SIGNAL:
+
+ if (!member_name_is_valid(v->signal.member) ||
+ !signature_is_single(v->signal.signature, false)) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ break;
+
+ default:
+ r = -EINVAL;
+ goto fail;
+ }
}
- r = ppoll(p, n, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL);
- if (r < 0)
- return -errno;
+ LIST_PREPEND(struct node_vtable, vtables, n->vtables, c);
+ return 0;
- return r > 0 ? 1 : 0;
+fail:
+ if (c)
+ free_node_vtable(bus, c);
+
+ bus_node_gc(bus, n);
+ return 0;
}
-int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) {
+static int remove_object_vtable_internal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ bool fallback) {
+
+ struct node_vtable *c;
+ struct node *n;
if (!bus)
return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (!interface_name_is_valid(interface))
+ return -EINVAL;
if (bus_pid_changed(bus))
return -ECHILD;
- if (bus->rqueue_size > 0)
+ n = hashmap_get(bus->nodes, path);
+ if (!n)
return 0;
- return bus_poll(bus, false, timeout_usec);
-}
+ LIST_FOREACH(vtables, c, n->vtables)
+ if (streq(c->interface, interface) && c->is_fallback == fallback)
+ break;
-int sd_bus_flush(sd_bus *bus) {
- int r;
+ if (!c)
+ return 0;
- if (!bus)
- return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
- if (bus_pid_changed(bus))
- return -ECHILD;
+ LIST_REMOVE(struct node_vtable, vtables, n->vtables, c);
- r = bus_ensure_running(bus);
- if (r < 0)
- return r;
+ free_node_vtable(bus, c);
+ return 1;
+}
- if (bus->wqueue_size <= 0)
- return 0;
+int sd_bus_add_object_vtable(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ void *userdata) {
- for (;;) {
- r = dispatch_wqueue(bus);
- if (r < 0)
- return r;
+ return add_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata);
+}
- if (bus->wqueue_size <= 0)
- return 0;
+int sd_bus_remove_object_vtable(
+ sd_bus *bus,
+ const char *path,
+ const char *interface) {
- r = bus_poll(bus, false, (uint64_t) -1);
- if (r < 0)
- return r;
- }
+ return remove_object_vtable_internal(bus, path, interface, false);
}
-int sd_bus_add_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata) {
- struct filter_callback *f;
+int sd_bus_add_fallback_vtable(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ sd_bus_object_find_t find,
+ void *userdata) {
- if (!bus)
- return -EINVAL;
- if (!callback)
- return -EINVAL;
- if (bus_pid_changed(bus))
- return -ECHILD;
+ return add_object_vtable_internal(bus, path, interface, vtable, true, find, userdata);
+}
- f = new0(struct filter_callback, 1);
- if (!f)
- return -ENOMEM;
- f->callback = callback;
- f->userdata = userdata;
+int sd_bus_remove_fallback_vtable(
+ sd_bus *bus,
+ const char *path,
+ const char *interface) {
- bus->filter_callbacks_modified = true;
- LIST_PREPEND(struct filter_callback, callbacks, bus->filter_callbacks, f);
- return 0;
+ return remove_object_vtable_internal(bus, path, interface, true);
}
-int sd_bus_remove_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata) {
- struct filter_callback *f;
+int sd_bus_add_node_enumerator(
+ sd_bus *bus,
+ const char *path,
+ sd_bus_node_enumerator_t callback,
+ void *userdata) {
+
+ struct node_enumerator *c;
+ struct node *n;
+ int r;
if (!bus)
return -EINVAL;
+ if (!object_path_is_valid(path))
+ return -EINVAL;
if (!callback)
return -EINVAL;
if (bus_pid_changed(bus))
return -ECHILD;
- LIST_FOREACH(callbacks, f, bus->filter_callbacks) {
- if (f->callback == callback && f->userdata == userdata) {
- bus->filter_callbacks_modified = true;
- LIST_REMOVE(struct filter_callback, callbacks, bus->filter_callbacks, f);
- free(f);
- return 1;
- }
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
+
+ c = new0(struct node_enumerator, 1);
+ if (!c) {
+ r = -ENOMEM;
+ goto fail;
}
+ c->node = n;
+ c->callback = callback;
+ c->userdata = userdata;
+
+ LIST_PREPEND(struct node_enumerator, enumerators, n->enumerators, c);
return 0;
+
+fail:
+ free(c);
+ bus_node_gc(bus, n);
+ return r;
}
-static int bus_add_object(
+int sd_bus_remove_node_enumerator(
sd_bus *bus,
- bool fallback,
const char *path,
- sd_bus_message_handler_t callback,
+ sd_bus_node_enumerator_t callback,
void *userdata) {
- struct object_callback *c;
- int r;
+ struct node_enumerator *c;
+ struct node *n;
if (!bus)
return -EINVAL;
- if (!path)
+ if (!object_path_is_valid(path))
return -EINVAL;
if (!callback)
return -EINVAL;
if (bus_pid_changed(bus))
return -ECHILD;
- r = hashmap_ensure_allocated(&bus->object_callbacks, string_hash_func, string_compare_func);
+ n = hashmap_get(bus->nodes, path);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(enumerators, c, n->enumerators)
+ if (c->callback == callback && c->userdata == userdata)
+ break;
+
+ if (!c)
+ return 0;
+
+ LIST_REMOVE(struct node_enumerator, enumerators, n->enumerators, c);
+ free(c);
+
+ bus_node_gc(bus, n);
+
+ return 1;
+}
+
+static int emit_properties_changed_on_interface(
+ sd_bus *bus,
+ const char *prefix,
+ const char *path,
+ const char *interface,
+ bool require_fallback,
+ char **names) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ bool has_invalidating = false;
+ struct vtable_member key;
+ struct node_vtable *c;
+ struct node *n;
+ char **property;
+ void *u;
+ int r;
+
+ assert(bus);
+ assert(path);
+ assert(interface);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (streq(c->interface, interface))
+ break;
+
+ r = node_vtable_get_userdata(bus, path, c, &u);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ break;
+ }
+
+ if (!c)
+ return 0;
+
+ r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus", "PropertiesChanged", &m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "s", interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sv}");
if (r < 0)
return r;
- c = new0(struct object_callback, 1);
- if (!c)
- return -ENOMEM;
+ key.path = prefix;
+ key.interface = interface;
- c->path = strdup(path);
- if (!c->path) {
- free(c);
- return -ENOMEM;
- }
+ STRV_FOREACH(property, names) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ struct vtable_member *v;
- c->callback = callback;
- c->userdata = userdata;
- c->is_fallback = fallback;
+ key.member = *property;
+ v = hashmap_get(bus->vtable_properties, &key);
+ if (!v)
+ return -ENOENT;
- bus->object_callbacks_modified = true;
- r = hashmap_put(bus->object_callbacks, c->path, c);
- if (r < 0) {
- free(c->path);
- free(c);
- return r;
- }
+ assert(c == v->parent);
- return 0;
-}
+ if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE))
+ return -EDOM;
+ if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY) {
+ has_invalidating = true;
+ continue;
+ }
-static int bus_remove_object(
- sd_bus *bus,
- bool fallback,
- const char *path,
- sd_bus_message_handler_t callback,
- void *userdata) {
+ r = sd_bus_message_open_container(m, 'e', "sv");
+ if (r < 0)
+ return r;
- struct object_callback *c;
+ r = sd_bus_message_append(m, "s", *n);
+ if (r < 0)
+ return r;
- if (!bus)
- return -EINVAL;
- if (!path)
- return -EINVAL;
- if (!callback)
- return -EINVAL;
- if (bus_pid_changed(bus))
- return -ECHILD;
+ r = sd_bus_message_open_container(m, 'v', v->vtable->property.signature);
+ if (r < 0)
+ return r;
- c = hashmap_get(bus->object_callbacks, path);
- if (!c)
- return 0;
+ r = v->vtable->property.get(bus, m->path, interface, *property, m, &error, u);
+ if (r < 0)
+ return r;
- if (c->callback != callback || c->userdata != userdata || c->is_fallback != fallback)
- return 0;
+ if (sd_bus_error_is_set(&error))
+ return bus_error_to_errno(&error);
- bus->object_callbacks_modified = true;
- assert_se(c == hashmap_remove(bus->object_callbacks, c->path));
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
- free(c->path);
- free(c);
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
- return 1;
-}
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
-int sd_bus_add_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata) {
- return bus_add_object(bus, false, path, callback, userdata);
-}
+ r = sd_bus_message_open_container(m, 'a', "s");
+ if (r < 0)
+ return r;
-int sd_bus_remove_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata) {
- return bus_remove_object(bus, false, path, callback, userdata);
-}
+ if (has_invalidating) {
+ STRV_FOREACH(property, names) {
+ struct vtable_member *v;
-int sd_bus_add_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata) {
- return bus_add_object(bus, true, prefix, callback, userdata);
-}
+ key.member = *property;
+ assert_se(v = hashmap_get(bus->vtable_properties, &key));
+ assert(c == v->parent);
-int sd_bus_remove_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata) {
- return bus_remove_object(bus, true, prefix, callback, userdata);
+ if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY))
+ continue;
+
+ r = sd_bus_message_append(m, "s", *property);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_send(bus, m, NULL);
+ if (r < 0)
+ return r;
+
+ return 1;
}
-int sd_bus_add_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata) {
- struct bus_match_component *components = NULL;
- unsigned n_components = 0;
- uint64_t cookie = 0;
- int r = 0;
+int sd_bus_emit_properties_changed_strv(sd_bus *bus, const char *path, const char *interface, char **names) {
+ size_t pl;
+ int r;
if (!bus)
return -EINVAL;
- if (!match)
+ if (!object_path_is_valid(path))
+ return -EINVAL;
+ if (!interface_name_is_valid(interface))
return -EINVAL;
- if (bus_pid_changed(bus))
- return -ECHILD;
- r = bus_match_parse(match, &components, &n_components);
- if (r < 0)
- goto finish;
+ r = emit_properties_changed_on_interface(bus, path, path, interface, false, names);
+ if (r != 0)
+ return r;
- if (bus->bus_client) {
- cookie = ++bus->match_cookie;
+ pl = strlen(path);
+ if (pl > 1 ) {
+ char p[pl+1];
- r = bus_add_match_internal(bus, match, components, n_components, cookie);
- if (r < 0)
- goto finish;
- }
+ strcpy(p, path);
+ for (;;) {
+ char *e;
- bus->match_callbacks_modified = true;
- r = bus_match_add(&bus->match_callbacks, components, n_components, callback, userdata, cookie, NULL);
- if (r < 0) {
- if (bus->bus_client)
- bus_remove_match_internal(bus, match, cookie);
+ if (streq(p, "/"))
+ break;
+
+ e = strrchr(p, '/');
+ assert(e);
+ if (e == p)
+ *(e+1) = 0;
+ else
+ *e = 0;
+
+ r = emit_properties_changed_on_interface(bus, p, path, interface, true, names);
+ if (r != 0)
+ return r;
+ }
}
-finish:
- bus_match_parse_free(components, n_components);
- return r;
+ return -ENOENT;
}
-int sd_bus_remove_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata) {
- struct bus_match_component *components = NULL;
- unsigned n_components = 0;
- int r = 0, q = 0;
- uint64_t cookie = 0;
-
- if (!bus)
- return -EINVAL;
- if (!match)
- return -EINVAL;
- if (bus_pid_changed(bus))
- return -ECHILD;
+int sd_bus_emit_properties_changed(sd_bus *bus, const char *path, const char *interface, const char *name, ...) {
+ _cleanup_strv_free_ char **names = NULL;
+ va_list ap;
- r = bus_match_parse(match, &components, &n_components);
- if (r < 0)
- return r;
+ va_start(ap, name);
+ names = strv_new_ap(name, ap);
+ va_end(ap);
- bus->match_callbacks_modified = true;
- r = bus_match_remove(&bus->match_callbacks, components, n_components, callback, userdata, &cookie);
+ if (!names)
+ return -ENOMEM;
- if (bus->bus_client)
- q = bus_remove_match_internal(bus, match, cookie);
+ return sd_bus_emit_properties_changed_strv(bus, path, interface, names);
+}
- bus_match_parse_free(components, n_components);
+int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interfaces, ...) {
+ return -ENOSYS;
+}
- return r < 0 ? r : q;
+int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interfaces, ...) {
+ return -ENOSYS;
}
-int sd_bus_emit_signal(
+int sd_bus_get_property(
sd_bus *bus,
+ const char *destination,
const char *path,
const char *interface,
const char *member,
- const char *types, ...) {
+ sd_bus_error *error,
+ sd_bus_message **reply,
+ const char *type) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- va_list ap;
+ sd_bus_message *rep = NULL;
int r;
- if (!bus)
+ if (interface && !interface_name_is_valid(interface))
+ return -EINVAL;
+ if (!member_name_is_valid(member))
+ return -EINVAL;
+ if (!signature_is_single(type, false))
+ return -EINVAL;
+ if (!reply)
return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
- if (bus_pid_changed(bus))
- return -ECHILD;
- r = sd_bus_message_new_signal(bus, path, interface, member, &m);
+ r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &rep, "ss", strempty(interface), member);
if (r < 0)
return r;
- va_start(ap, types);
- r = bus_message_append_ap(m, types, ap);
- va_end(ap);
- if (r < 0)
+ r = sd_bus_message_enter_container(rep, 'v', type);
+ if (r < 0) {
+ sd_bus_message_unref(rep);
return r;
+ }
- return sd_bus_send(bus, m, NULL);
+ *reply = rep;
+ return 0;
}
-int sd_bus_call_method(
+int sd_bus_set_property(
sd_bus *bus,
const char *destination,
const char *path,
const char *interface,
const char *member,
sd_bus_error *error,
- sd_bus_message **reply,
- const char *types, ...) {
+ const char *type, ...) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
va_list ap;
int r;
- if (!bus)
-
+ if (interface && !interface_name_is_valid(interface))
+ return -EINVAL;
+ if (!member_name_is_valid(member))
+ return -EINVAL;
+ if (!signature_is_single(type, false))
return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
- if (bus_pid_changed(bus))
- return -ECHILD;
- r = sd_bus_message_new_method_call(bus, destination, path, interface, member, &m);
+ r = sd_bus_message_new_method_call(bus, destination, path, "org.freedesktop.DBus.Properties", "Set", &m);
if (r < 0)
return r;
- va_start(ap, types);
- r = bus_message_append_ap(m, types, ap);
+ r = sd_bus_message_append(m, "ss", strempty(interface), member);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'v', type);
+ if (r < 0)
+ return r;
+
+ va_start(ap, type);
+ r = bus_message_append_ap(m, type, ap);
va_end(ap);
if (r < 0)
return r;
- return sd_bus_send_with_reply_and_block(bus, m, 0, error, reply);
-}
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
-int sd_bus_reply_method_return(
- sd_bus *bus,
- sd_bus_message *call,
- const char *types, ...) {
+ return sd_bus_send_with_reply_and_block(bus, m, 0, error, NULL);
+}
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- va_list ap;
- int r;
+int sd_bus_add_object_manager(sd_bus *bus, const char *path) {
+ struct node *n;
if (!bus)
return -EINVAL;
- if (!call)
- return -EINVAL;
- if (!call->sealed)
- return -EPERM;
- if (call->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
+ if (!object_path_is_valid(path))
return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
if (bus_pid_changed(bus))
return -ECHILD;
- if (call->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED)
- return 0;
-
- r = sd_bus_message_new_method_return(bus, call, &m);
- if (r < 0)
- return r;
-
- va_start(ap, types);
- r = bus_message_append_ap(m, types, ap);
- va_end(ap);
- if (r < 0)
- return r;
+ n = bus_node_allocate(bus, path);
+ if (!n)
+ return -ENOMEM;
- return sd_bus_send(bus, m, NULL);
+ n->object_manager = true;
+ return 0;
}
-int sd_bus_reply_method_error(
- sd_bus *bus,
- sd_bus_message *call,
- const sd_bus_error *e) {
-
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
+int sd_bus_remove_object_manager(sd_bus *bus, const char *path) {
+ struct node *n;
if (!bus)
return -EINVAL;
- if (!call)
- return -EINVAL;
- if (!call->sealed)
- return -EPERM;
- if (call->header->type != SD_BUS_MESSAGE_TYPE_METHOD_CALL)
- return -EINVAL;
- if (!sd_bus_error_is_set(e))
+ if (!object_path_is_valid(path))
return -EINVAL;
- if (!BUS_IS_OPEN(bus->state))
- return -ENOTCONN;
if (bus_pid_changed(bus))
return -ECHILD;
- if (call->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED)
+ n = hashmap_get(bus->nodes, path);
+ if (!n)
return 0;
- r = sd_bus_message_new_method_error(bus, call, e, &m);
- if (r < 0)
- return r;
-
- return sd_bus_send(bus, m, NULL);
-}
-
-bool bus_pid_changed(sd_bus *bus) {
- assert(bus);
-
- /* We don't support people creating a bus connection and
- * keeping it around over a fork(). Let's complain. */
+ if (!n->object_manager)
+ return 0;
- return bus->original_pid != getpid();
+ n->object_manager = false;
+ bus_node_gc(bus, n);
+ return 1;
}
diff --git a/src/libsystemd-bus/test-bus-introspect.c b/src/libsystemd-bus/test-bus-introspect.c
new file mode 100644
index 0000000..ea26cdd
--- /dev/null
+++ b/src/libsystemd-bus/test-bus-introspect.c
@@ -0,0 +1,63 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+#include "log.h"
+#include "bus-introspect.h"
+
+static int prop_get(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
+ return -EINVAL;
+}
+
+static int prop_set(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
+ return -EINVAL;
+}
+
+static const sd_bus_vtable vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("Hello", "ssas", "a(uu)", 0, NULL),
+ SD_BUS_METHOD("DeprecatedHello", "", "", SD_BUS_VTABLE_DEPRECATED, NULL),
+ SD_BUS_METHOD("DeprecatedHelloNoReply", "", "", SD_BUS_VTABLE_DEPRECATED|SD_BUS_VTABLE_METHOD_NO_REPLY, NULL),
+ SD_BUS_SIGNAL("Wowza", "sss", 0),
+ SD_BUS_SIGNAL("DeprecatedWowza", "ut", SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_WRITABLE_PROPERTY("AProperty", "s", prop_get, prop_set, 0, 0),
+ SD_BUS_PROPERTY("AReadOnlyDeprecatedProperty", "(ut)", prop_get, 0, SD_BUS_VTABLE_DEPRECATED),
+ SD_BUS_PROPERTY("ChangingProperty", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("Invalidating", "t", prop_get, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY),
+ SD_BUS_VTABLE_END
+};
+
+int main(int argc, char *argv[]) {
+ struct introspect intro;
+
+ log_set_max_level(LOG_DEBUG);
+
+ assert_se(introspect_begin(&intro) >= 0);
+
+ assert_se(introspect_write_interface(&intro, "org.foo", vtable) >= 0);
+
+ fflush(intro.f);
+ fputs(intro.introspection, stdout);
+
+ introspect_free(&intro);
+
+ return 0;
+}
diff --git a/src/libsystemd-bus/test-bus-objects.c b/src/libsystemd-bus/test-bus-objects.c
new file mode 100644
index 0000000..a95789f
--- /dev/null
+++ b/src/libsystemd-bus/test-bus-objects.c
@@ -0,0 +1,374 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "log.h"
+#include "util.h"
+#include "macro.h"
+#include "strv.h"
+
+#include "sd-bus.h"
+#include "bus-internal.h"
+#include "bus-message.h"
+
+/* Test:
+ *
+ * sd_bus_add_object_manager()
+ * sd_bus_emit_properties_changed()
+ *
+ * Add in:
+ *
+ * automatic properties
+ * node hierarchy updates during dispatching
+ * emit_interfaces_added/emit_interfaces_removed
+ *
+ */
+
+struct context {
+ int fds[2];
+ bool quit;
+ char *something;
+};
+
+static int something_handler(sd_bus *bus, sd_bus_message *m, void *userdata) {
+ struct context *c = userdata;
+ const char *s;
+ char *n = NULL;
+ int r;
+
+ r = sd_bus_message_read(m, "s", &s);
+ assert_se(r > 0);
+
+ n = strjoin("<<<", s, ">>>", NULL);
+ assert_se(n);
+
+ free(c->something);
+ c->something = n;
+
+ log_info("AlterSomething() called, got %s, returning %s", s, n);
+
+ r = sd_bus_reply_method_return(bus, m, "s", n);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int exit_handler(sd_bus *bus, sd_bus_message *m, void *userdata) {
+ struct context *c = userdata;
+ int r;
+
+ c->quit = true;
+
+ log_info("Exit called");
+
+ r = sd_bus_reply_method_return(bus, m, "");
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int get_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
+ struct context *c = userdata;
+ int r;
+
+ log_info("property get for %s called", property);
+
+ r = sd_bus_message_append(reply, "s", c->something);
+ assert_se(r >= 0);
+
+ return 1;
+}
+
+static int set_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, sd_bus_error *error, void *userdata) {
+ struct context *c = userdata;
+ const char *s;
+ char *n;
+ int r;
+
+ log_info("property set for %s called", property);
+
+ r = sd_bus_message_read(value, "s", &s);
+ assert_se(r >= 0);
+
+ n = strdup(s);
+ assert_se(n);
+
+ free(c->something);
+ c->something = n;
+
+ return 1;
+}
+
+static int value_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
+ _cleanup_free_ char *s = NULL;
+ const char *x;
+ int r;
+
+ assert_se(asprintf(&s, "object %p, path %s", userdata, path) >= 0);
+ r = sd_bus_message_append(reply, "s", s);
+ assert_se(r >= 0);
+
+ assert_se(x = startswith(path, "/value/"));
+
+ assert_se(PTR_TO_UINT(userdata) == 30);
+
+
+ return 1;
+}
+
+static const sd_bus_vtable vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_METHOD("AlterSomething", "s", "s", 0, something_handler),
+ SD_BUS_METHOD("Exit", "", "", 0, exit_handler),
+ SD_BUS_WRITABLE_PROPERTY("Something", "s", get_handler, set_handler, 0, 0),
+ SD_BUS_VTABLE_END
+};
+
+static const sd_bus_vtable vtable2[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_PROPERTY("Value", "s", value_handler, 10, 0),
+ SD_BUS_VTABLE_END
+};
+
+static int enumerator_callback(sd_bus *b, const char *path, char ***nodes, void *userdata) {
+
+ if (object_path_startswith("/value", path))
+ assert_se(*nodes = strv_new("/value/a", "/value/b", "/value/c", NULL));
+
+ return 1;
+}
+
+static void *server(void *p) {
+ struct context *c = p;
+ sd_bus *bus = NULL;
+ sd_id128_t id;
+ int r;
+
+ c->quit = false;
+
+ assert_se(sd_id128_randomize(&id) >= 0);
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
+ assert_se(sd_bus_set_server(bus, 1, id) >= 0);
+
+ assert_se(sd_bus_add_object_vtable(bus, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0);
+ assert_se(sd_bus_add_object_vtable(bus, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0);
+ assert_se(sd_bus_add_fallback_vtable(bus, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0);
+ assert_se(sd_bus_add_node_enumerator(bus, "/value", enumerator_callback, NULL) >= 0);
+
+ assert_se(sd_bus_start(bus) >= 0);
+
+ log_error("Entering event loop on server");
+
+ while (!c->quit) {
+ log_error("Loop!");
+
+ r = sd_bus_process(bus, NULL);
+ if (r < 0) {
+ log_error("Failed to process requests: %s", strerror(-r));
+ goto fail;
+ }
+
+ if (r == 0) {
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error("Failed to wait: %s", strerror(-r));
+ goto fail;
+ }
+
+ continue;
+ }
+ }
+
+ r = 0;
+
+fail:
+ if (bus) {
+ sd_bus_flush(bus);
+ sd_bus_unref(bus);
+ }
+
+ return INT_TO_PTR(r);
+}
+
+static int client(struct context *c) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *s;
+ int r;
+
+ assert_se(sd_bus_new(&bus) >= 0);
+ assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
+ assert_se(sd_bus_start(bus) >= 0);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "s", "hallo");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "<<<hallo>>>"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Doesntexist", &error, &reply, "");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.UnknownMethod"));
+
+ sd_bus_error_free(&error);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "as", 1, "hallo");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.InvalidArgs"));
+
+ sd_bus_error_free(&error);
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "<<<hallo>>>"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, "s", "test");
+ assert_se(r >= 0);
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ assert_se(streq(s, "test"));
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r <= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/value/xuzz", "org.freedesktop.systemd.ValueTest", "Value", &error, &reply, "s");
+ assert_se(r >= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ log_info("read %s", s);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r <= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r <= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ assert_se(r <= 0);
+
+ r = sd_bus_message_read(reply, "s", &s);
+ assert_se(r >= 0);
+ fputs(s, stdout);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "");
+ assert_se(r <= 0);
+
+ bus_message_dump(reply);
+
+ sd_bus_message_unref(reply);
+ reply = NULL;
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "org.freedesktop.systemd.ValueTest2");
+ assert_se(r < 0);
+ assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.UnknownInterface"));
+ sd_bus_error_free(&error);
+
+ r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Exit", &error, NULL, "");
+ assert_se(r >= 0);
+
+ sd_bus_flush(bus);
+
+ return 0;
+}
+
+int main(int argc, char *argv[]) {
+ struct context c;
+ pthread_t s;
+ void *p;
+ int r, q;
+
+ zero(c);
+
+ assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
+
+ r = pthread_create(&s, NULL, server, &c);
+ if (r != 0)
+ return -r;
+
+ r = client(&c);
+
+ q = pthread_join(s, &p);
+ if (q != 0)
+ return -q;
+
+ if (r < 0)
+ return r;
+
+ if (PTR_TO_INT(p) < 0)
+ return PTR_TO_INT(p);
+
+ free(c.something);
+
+ return EXIT_SUCCESS;
+}
diff --git a/src/libsystemd-bus/test-bus-signature.c b/src/libsystemd-bus/test-bus-signature.c
index cab0daa..c430469 100644
--- a/src/libsystemd-bus/test-bus-signature.c
+++ b/src/libsystemd-bus/test-bus-signature.c
@@ -28,29 +28,30 @@
int main(int argc, char *argv[]) {
- assert_se(signature_is_single("y"));
- assert_se(signature_is_single("u"));
- assert_se(signature_is_single("v"));
- assert_se(signature_is_single("as"));
- assert_se(signature_is_single("(ss)"));
- assert_se(signature_is_single("()"));
- assert_se(signature_is_single("(()()()()())"));
- assert_se(signature_is_single("(((())))"));
- assert_se(signature_is_single("((((s))))"));
- assert_se(signature_is_single("{ss}"));
- assert_se(signature_is_single("a{ss}"));
- assert_se(!signature_is_single("uu"));
- assert_se(!signature_is_single(""));
- assert_se(!signature_is_single("("));
- assert_se(!signature_is_single(")"));
- assert_se(!signature_is_single("())"));
- assert_se(!signature_is_single("((())"));
- assert_se(!signature_is_single("{)"));
- assert_se(!signature_is_single("{}"));
- assert_se(!signature_is_single("{sss}"));
- assert_se(!signature_is_single("{s}"));
- assert_se(!signature_is_single("{ass}"));
- assert_se(!signature_is_single("a}"));
+ assert_se(signature_is_single("y", false));
+ assert_se(signature_is_single("u", false));
+ assert_se(signature_is_single("v", false));
+ assert_se(signature_is_single("as", false));
+ assert_se(signature_is_single("(ss)", false));
+ assert_se(signature_is_single("()", false));
+ assert_se(signature_is_single("(()()()()())", false));
+ assert_se(signature_is_single("(((())))", false));
+ assert_se(signature_is_single("((((s))))", false));
+ assert_se(signature_is_single("{ss}", true));
+ assert_se(signature_is_single("a{ss}", false));
+ assert_se(!signature_is_single("uu", false));
+ assert_se(!signature_is_single("", false));
+ assert_se(!signature_is_single("(", false));
+ assert_se(!signature_is_single(")", false));
+ assert_se(!signature_is_single("())", false));
+ assert_se(!signature_is_single("((())", false));
+ assert_se(!signature_is_single("{)", false));
+ assert_se(!signature_is_single("{}", true));
+ assert_se(!signature_is_single("{sss}", true));
+ assert_se(!signature_is_single("{s}", true));
+ assert_se(!signature_is_single("{ss}", false));
+ assert_se(!signature_is_single("{ass}", true));
+ assert_se(!signature_is_single("a}", true));
assert_se(signature_is_pair("yy"));
assert_se(signature_is_pair("ss"));
@@ -112,5 +113,25 @@ int main(int argc, char *argv[]) {
assert_se(!namespace_simple_pattern("", "foo"));
assert_se(!namespace_simple_pattern("foo", ""));
+ assert_se(streq(object_path_startswith("/foo/bar", "/foo"), "bar"));
+ assert_se(streq(object_path_startswith("/foo", "/foo"), ""));
+ assert_se(streq(object_path_startswith("/foo", "/"), "foo"));
+ assert_se(streq(object_path_startswith("/", "/"), ""));
+ assert_se(!object_path_startswith("/foo", "/bar"));
+ assert_se(!object_path_startswith("/", "/bar"));
+ assert_se(!object_path_startswith("/foo", ""));
+
+ assert_se(object_path_is_valid("/foo/bar"));
+ assert_se(object_path_is_valid("/foo"));
+ assert_se(object_path_is_valid("/"));
+ assert_se(object_path_is_valid("/foo5"));
+ assert_se(object_path_is_valid("/foo_5"));
+ assert_se(!object_path_is_valid(""));
+ assert_se(!object_path_is_valid("/foo/"));
+ assert_se(!object_path_is_valid("//"));
+ assert_se(!object_path_is_valid("//foo"));
+ assert_se(!object_path_is_valid("/foo//bar"));
+ assert_se(!object_path_is_valid("/foo/aaaäöä"));
+
return 0;
}
diff --git a/src/systemd/sd-bus-protocol.h b/src/systemd/sd-bus-protocol.h
index a26d27c..568005b 100644
--- a/src/systemd/sd-bus-protocol.h
+++ b/src/systemd/sd-bus-protocol.h
@@ -108,6 +108,21 @@ enum {
"<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n" \
"\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+#define SD_BUS_INTROSPECT_INTERFACE_PEER \
+ " <interface name=\"org.freedesktop.DBus.Peer\">\n" \
+ " <method name=\"Ping\"/>\n" \
+ " <method name=\"GetMachineId\">\n" \
+ " <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " </interface>\n"
+
+#define SD_BUS_INTROSPECT_INTERFACE_INTROSPECTABLE \
+ " <interface name=\"org.freedesktop.DBus.Introspectable\">\n" \
+ " <method name=\"Introspect\">\n" \
+ " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " </interface>\n"
+
#define SD_BUS_INTROSPECT_INTERFACE_PROPERTIES \
" <interface name=\"org.freedesktop.DBus.Properties\">\n" \
" <method name=\"Get\">\n" \
@@ -131,21 +146,21 @@ enum {
" </signal>\n" \
" </interface>\n"
-#define SD_BUS_INTROSPECT_INTERFACE_INTROSPECTABLE \
- " <interface name=\"org.freedesktop.DBus.Introspectable\">\n" \
- " <method name=\"Introspect\">\n" \
- " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n" \
+#define SD_BUS_INTROSPECT_INTERFACE_OBJECT_MANAGER \
+ " <interface name=\"org.freedesktop.DBus.ObjectManager\">\n" \
+ " <method name=\"GetManagedObjects\">\n" \
+ " <arg type=\"a{oa{sa{sv}}}\" name=\"object_paths_interfaces_and_properties\" direction=\"out\"/>\n" \
" </method>\n" \
+ " <signal name=\"InterfacesAdded\">\n" \
+ " <arg type=\"o\" name=\"object_path\"/>\n" \
+ " <arg type=\"a{sa{sv}}\" name=\"interfaces_and_properties\"/>\n" \
+ " </signal>\n" \
+ " <signal name=\"InterfacesRemoved\">\n" \
+ " <arg type=\"o\" name=\"object_path\"/>\n" \
+ " <arg type=\"as\" name=\"interfaces\"/>\n" \
+ " </signal>\n" \
" </interface>\n"
-#define SD_BUS_INTROSPECT_INTERFACE_PEER \
- "<interface name=\"org.freedesktop.DBus.Peer\">\n" \
- " <method name=\"Ping\"/>\n" \
- " <method name=\"GetMachineId\">\n" \
- " <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n" \
- " </method>\n" \
- "</interface>\n"
-
#ifdef __cplusplus
}
#endif
diff --git a/src/systemd/sd-bus-vtable.h b/src/systemd/sd-bus-vtable.h
new file mode 100644
index 0000000..a1f078e
--- /dev/null
+++ b/src/systemd/sd-bus-vtable.h
@@ -0,0 +1,127 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foosdbusvtablehfoo
+#define foosdbusvtablehfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+typedef struct sd_bus_vtable sd_bus_vtable;
+
+#include "sd-bus.h"
+
+enum {
+ _SD_BUS_VTABLE_START = '<',
+ _SD_BUS_VTABLE_END = '>',
+ _SD_BUS_VTABLE_METHOD = 'M',
+ _SD_BUS_VTABLE_SIGNAL = 'S',
+ _SD_BUS_VTABLE_PROPERTY = 'P',
+ _SD_BUS_VTABLE_WRITABLE_PROPERTY = 'W',
+ _SD_BUS_VTABLE_CHILDREN = 'C'
+};
+
+enum {
+ SD_BUS_VTABLE_DEPRECATED = 1,
+ SD_BUS_VTABLE_METHOD_NO_REPLY = 2,
+ SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE = 4,
+ SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY = 8,
+};
+
+struct sd_bus_vtable {
+ /* Please do not initialize this structure directly, use the
+ * macros below instead */
+
+ int type;
+ int flags;
+ union {
+ struct {
+ size_t element_size;
+ } start;
+ struct {
+ const char *member;
+ const char *signature;
+ const char *result;
+ sd_bus_message_handler_t handler;
+ } method;
+ struct {
+ const char *member;
+ const char *signature;
+ } signal;
+ struct {
+ const char *member;
+ const char *signature;
+ sd_bus_property_get_t get;
+ sd_bus_property_set_t set;
+ size_t offset;
+ } property;
+ };
+};
+
+#define SD_BUS_VTABLE_START(_flags) \
+ { \
+ .type = _SD_BUS_VTABLE_START, \
+ .flags = _flags, \
+ .start.element_size = sizeof(sd_bus_vtable), \
+ }
+
+#define SD_BUS_METHOD(_member, _signature, _result, _flags, _handler) \
+ { \
+ .type = _SD_BUS_VTABLE_METHOD, \
+ .flags = _flags, \
+ .method.member = _member, \
+ .method.signature = _signature, \
+ .method.result = _result, \
+ .method.handler = _handler, \
+ }
+
+#define SD_BUS_SIGNAL(_member, _signature, _flags) \
+ { \
+ .type = _SD_BUS_VTABLE_SIGNAL, \
+ .flags = _flags, \
+ .signal.member = _member, \
+ .signal.signature = _signature, \
+ }
+
+#define SD_BUS_PROPERTY(_member, _signature, _get, _offset, _flags) \
+ { \
+ .type = _SD_BUS_VTABLE_PROPERTY, \
+ .flags = _flags, \
+ .property.member = _member, \
+ .property.signature = _signature, \
+ .property.get = _get, \
+ .property.offset = _offset, \
+ }
+
+#define SD_BUS_WRITABLE_PROPERTY(_member, _signature, _get, _set, _offset, _flags) \
+ { \
+ .type = _SD_BUS_VTABLE_WRITABLE_PROPERTY, \
+ .flags = _flags, \
+ .property.member = _member, \
+ .property.signature = _signature, \
+ .property.get = _get, \
+ .property.set = _set, \
+ .property.offset = _offset, \
+ }
+
+#define SD_BUS_VTABLE_END \
+ { \
+ .type = _SD_BUS_VTABLE_END, \
+ }
+
+#endif
diff --git a/src/systemd/sd-bus.h b/src/systemd/sd-bus.h
index 878001c..101e751 100644
--- a/src/systemd/sd-bus.h
+++ b/src/systemd/sd-bus.h
@@ -26,8 +26,6 @@
#include <sys/types.h>
#include <sd-id128.h>
-#include "sd-bus-protocol.h"
-#include "sd-memfd.h"
#ifdef __cplusplus
extern "C" {
@@ -41,6 +39,8 @@ extern "C" {
# endif
#endif
+/* Types */
+
typedef struct sd_bus sd_bus;
typedef struct sd_bus_message sd_bus_message;
@@ -50,8 +50,21 @@ typedef struct {
int need_free;
} sd_bus_error;
+/* Callbacks */
+
typedef int (*sd_bus_message_handler_t)(sd_bus *bus, sd_bus_message *m, void *userdata);
+typedef int (*sd_bus_property_get_t) (sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata);
+typedef int (*sd_bus_property_set_t) (sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, sd_bus_error *error, void *userdata);
+
+typedef int (*sd_bus_object_find_t) (sd_bus *bus, const char *path, const char *interface, void **found, void *userdata);
+
+typedef int (*sd_bus_node_enumerator_t) (sd_bus *bus, const char *path, char ***nodes, void *userdata);
+
+#include "sd-bus-protocol.h"
+#include "sd-bus-vtable.h"
+#include "sd-memfd.h"
+
/* Connections */
int sd_bus_open_system(sd_bus **ret);
@@ -98,21 +111,33 @@ int sd_bus_flush(sd_bus *bus);
int sd_bus_add_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_remove_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata);
+int sd_bus_add_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
+int sd_bus_remove_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
+
int sd_bus_add_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_remove_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_add_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_remove_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata);
-int sd_bus_add_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
-int sd_bus_remove_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata);
+int sd_bus_add_object_vtable(sd_bus *bus, const char *path, const char *interface, const sd_bus_vtable *vtable, void *userdata);
+int sd_bus_remove_object_vtable(sd_bus *bus, const char *path, const char *interface);
-/* Message object */
+int sd_bus_add_fallback_vtable(sd_bus *bus, const char *path, const char *interface, const sd_bus_vtable *vtable, sd_bus_object_find_t find, void *userdata);
+int sd_bus_remove_fallback_vtable(sd_bus *bus, const char *path, const char *interface);
+int sd_bus_add_node_enumerator(sd_bus *bus, const char *path, sd_bus_node_enumerator_t callback, void *userdata);
+int sd_bus_remove_node_enumerator(sd_bus *bus, const char *path, sd_bus_node_enumerator_t callback, void *userdata);
+
+int sd_bus_add_object_manager(sd_bus *bus, const char *path);
+int sd_bus_remove_object_manager(sd_bus *bus, const char *path);
+
+/* Message object */
int sd_bus_message_new_signal(sd_bus *bus, const char *path, const char *interface, const char *member, sd_bus_message **m);
int sd_bus_message_new_method_call(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message **m);
int sd_bus_message_new_method_return(sd_bus *bus, sd_bus_message *call, sd_bus_message **m);
int sd_bus_message_new_method_error(sd_bus *bus, sd_bus_message *call, const sd_bus_error *e, sd_bus_message **m);
+int sd_bus_message_new_method_errorf(sd_bus *bus, sd_bus_message *call, sd_bus_message **m, const char *name, const char *format, ...);
sd_bus_message* sd_bus_message_ref(sd_bus_message *m);
sd_bus_message* sd_bus_message_unref(sd_bus_message *m);
@@ -175,12 +200,26 @@ int sd_bus_message_exit_container(sd_bus_message *m);
int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents);
int sd_bus_message_rewind(sd_bus_message *m, int complete);
+int sd_bus_message_get_signature(sd_bus_message *m, int complete, const char **signature);
+
/* Convenience calls */
-int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
int sd_bus_call_method(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *error, sd_bus_message **reply, const char *types, ...);
+int sd_bus_get_property(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *error, sd_bus_message **reply, const char *type);
+int sd_bus_set_property(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *error, const char *type, ...);
int sd_bus_reply_method_return(sd_bus *bus, sd_bus_message *call, const char *types, ...);
int sd_bus_reply_method_error(sd_bus *bus, sd_bus_message *call, const sd_bus_error *e);
+int sd_bus_reply_method_errorf(sd_bus *bus, sd_bus_message *call, const char *name, const char *format, ...);
+
+int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
+
+int sd_bus_emit_properties_changed_strv(sd_bus *bus, const char *path, const char *interface, char **names);
+int sd_bus_emit_properties_changed(sd_bus *bus, const char *path, const char *interface, const char *name, ...);
+
+int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces); /* MISSING */
+int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...); /* MISSING */
+int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces); /* MISSING */
+int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...); /* MISSING */
/* Bus management */
@@ -199,7 +238,8 @@ int sd_bus_get_owner_machine_id(sd_bus *bus, const char *name, sd_id128_t *machi
#define SD_BUS_ERROR_MAKE(name, message) ((sd_bus_error) {(name), (message), 0})
void sd_bus_error_free(sd_bus_error *e);
-int sd_bus_error_set(sd_bus_error *e, const char *name, const char *format, ...) _sd_printf_attr_(3, 0);
+int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) _sd_printf_attr_(3, 0);
+int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message);
void sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message);
int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e);
int sd_bus_error_is_set(const sd_bus_error *e);
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