#include "log.h"
#include "build.h"
#include "pager.h"
+#include "xml.h"
+#include "path-util.h"
#include "sd-bus.h"
#include "bus-message.h"
static char *arg_host = NULL;
static bool arg_user = false;
static size_t arg_snaplen = 4096;
+static bool arg_list = false;
static void pager_open_if_enabled(void) {
assert(bus);
+ if (!arg_unique && !arg_acquired && !arg_activatable)
+ arg_unique = arg_acquired = arg_activatable = true;
+
r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);
if (r < 0) {
log_error("Failed to list names: %s", strerror(-r));
return 0;
}
+static void print_subtree(const char *prefix, const char *path, char **l) {
+ const char *vertical, *space;
+ char **n;
+
+ /* We assume the list is sorted. Let's first skip over the
+ * entry we are looking at. */
+ for (;;) {
+ if (!*l)
+ return;
+
+ if (!streq(*l, path))
+ break;
+
+ l++;
+ }
+
+ vertical = strappenda(prefix, draw_special_char(DRAW_TREE_VERTICAL));
+ space = strappenda(prefix, draw_special_char(DRAW_TREE_SPACE));
+
+ for (;;) {
+ bool has_more = false;
+
+ if (!*l || !path_startswith(*l, path))
+ break;
+
+ n = l + 1;
+ for (;;) {
+ if (!*n || !path_startswith(*n, path))
+ break;
+
+ if (!path_startswith(*n, *l)) {
+ has_more = true;
+ break;
+ }
+
+ n++;
+ }
+
+ printf("%s%s%s\n", prefix, draw_special_char(has_more ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), *l);
+
+ print_subtree(has_more ? vertical : space, *l, l);
+ l = n;
+ }
+}
+
+static void print_tree(const char *prefix, char **l) {
+
+ pager_open_if_enabled();
+
+ prefix = strempty(prefix);
+
+ if (arg_list) {
+ char **i;
+
+ STRV_FOREACH(i, l)
+ printf("%s%s\n", prefix, *i);
+ return;
+ }
+
+ if (!strv_isempty(l))
+ printf("%s/\n", prefix);
+
+ print_subtree(prefix, "/", l);
+}
+
+static int parse_xml_annotation(
+ const char **p,
+ void **xml_state) {
+
+
+ enum {
+ STATE_ANNOTATION,
+ STATE_NAME,
+ STATE_VALUE
+ } state = STATE_ANNOTATION;
+
+ for (;;) {
+ _cleanup_free_ char *name = NULL;
+
+ int t;
+
+ t = xml_tokenize(p, &name, xml_state, NULL);
+ if (t < 0) {
+ log_error("XML parse error.");
+ return t;
+ }
+
+ if (t == XML_END) {
+ log_error("Premature end of XML data.");
+ return -EBADMSG;
+ }
+
+ switch (state) {
+
+ case STATE_ANNOTATION:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+
+ if (streq_ptr(name, "name"))
+ state = STATE_NAME;
+
+ else if (streq_ptr(name, "value"))
+ state = STATE_VALUE;
+
+ else {
+ log_error("Unexpected <annotation> attribute %s.", name);
+ return -EBADMSG;
+ }
+
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "annotation")))
+
+ return 0;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <annotation>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_ANNOTATION;
+ else {
+ log_error("Unexpected token in <annotation>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_VALUE:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_ANNOTATION;
+ else {
+ log_error("Unexpected token in <annotation>. (3)");
+ return -EINVAL;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Bad state");
+ }
+ }
+}
+
+static int parse_xml_node(
+ const char *prefix,
+ Set *paths,
+ const char **p,
+ void **xml_state) {
+
+ enum {
+ STATE_NODE,
+ STATE_NODE_NAME,
+ STATE_INTERFACE,
+ STATE_INTERFACE_NAME,
+ STATE_METHOD,
+ STATE_METHOD_NAME,
+ STATE_METHOD_ARG,
+ STATE_METHOD_ARG_NAME,
+ STATE_METHOD_ARG_TYPE,
+ STATE_METHOD_ARG_DIRECTION,
+ STATE_SIGNAL,
+ STATE_SIGNAL_NAME,
+ STATE_SIGNAL_ARG,
+ STATE_SIGNAL_ARG_NAME,
+ STATE_SIGNAL_ARG_TYPE,
+ STATE_PROPERTY,
+ STATE_PROPERTY_NAME,
+ STATE_PROPERTY_TYPE,
+ STATE_PROPERTY_ACCESS,
+ } state = STATE_NODE;
+
+ _cleanup_free_ char *node_path = NULL;
+ const char *np = prefix;
+ int r;
+
+ for (;;) {
+ _cleanup_free_ char *name = NULL;
+ int t;
+
+ t = xml_tokenize(p, &name, xml_state, NULL);
+ if (t < 0) {
+ log_error("XML parse error.");
+ return t;
+ }
+
+ if (t == XML_END) {
+ log_error("Premature end of XML data.");
+ return -EBADMSG;
+ }
+
+ switch (state) {
+
+ case STATE_NODE:
+ if (t == XML_ATTRIBUTE_NAME) {
+
+ if (streq_ptr(name, "name"))
+ state = STATE_NODE_NAME;
+ else {
+ log_error("Unexpected <node> attribute %s.", name);
+ return -EBADMSG;
+ }
+
+ } else if (t == XML_TAG_OPEN) {
+
+ if (streq_ptr(name, "interface"))
+ state = STATE_INTERFACE;
+
+ else if (streq_ptr(name, "node")) {
+
+ r = parse_xml_node(np, paths, p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected <node> tag %s.", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "node"))) {
+
+ if (paths) {
+ if (!node_path) {
+ node_path = strdup(np);
+ if (!node_path)
+ return log_oom();
+ }
+
+ r = set_put(paths, node_path);
+ if (r < 0)
+ return log_oom();
+ else if (r > 0)
+ node_path = NULL;
+ }
+
+ return 0;
+
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <node>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_NODE_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ free(node_path);
+
+ if (name[0] == '/') {
+ node_path = name;
+ name = NULL;
+ } else {
+
+ if (endswith(prefix, "/"))
+ node_path = strappend(prefix, name);
+ else
+ node_path = strjoin(prefix, "/", name, NULL);
+ if (!node_path)
+ return log_oom();
+ }
+
+ np = node_path;
+ state = STATE_NODE;
+ } else {
+ log_error("Unexpected token in <node>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_INTERFACE:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_INTERFACE_NAME;
+ else {
+ log_error("Unexpected <interface> attribute %s.", name);
+ return -EBADMSG;
+ }
+
+ } else if (t == XML_TAG_OPEN) {
+ if (streq_ptr(name, "method"))
+ state = STATE_METHOD;
+ else if (streq_ptr(name, "signal"))
+ state = STATE_SIGNAL;
+ else if (streq_ptr(name, "property"))
+ state = STATE_PROPERTY;
+ else if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected <interface> tag %s.", name);
+ return -EINVAL;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "interface")))
+
+ state = STATE_NODE;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <interface>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_INTERFACE_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_INTERFACE;
+ else {
+ log_error("Unexpected token in <interface>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_METHOD_NAME;
+ else {
+ log_error("Unexpected <method> attribute %s", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_OPEN) {
+ if (streq_ptr(name, "arg"))
+ state = STATE_METHOD_ARG;
+ else if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected <method> tag %s.", name);
+ return -EINVAL;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "method")))
+
+ state = STATE_INTERFACE;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <method> (1).");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_METHOD;
+ else {
+ log_error("Unexpected token in <method> (2).");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD_ARG:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_METHOD_ARG_NAME;
+ else if (streq_ptr(name, "type"))
+ state = STATE_METHOD_ARG_TYPE;
+ else if (streq_ptr(name, "direction"))
+ state = STATE_METHOD_ARG_DIRECTION;
+ else {
+ log_error("Unexpected method <arg> attribute %s.", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_OPEN) {
+ if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected method <arg> tag %s.", name);
+ return -EINVAL;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+
+ state = STATE_METHOD;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in method <arg>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD_ARG_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_METHOD_ARG;
+ else {
+ log_error("Unexpected token in method <arg>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD_ARG_TYPE:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_METHOD_ARG;
+ else {
+ log_error("Unexpected token in method <arg>. (3)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_METHOD_ARG_DIRECTION:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_METHOD_ARG;
+ else {
+ log_error("Unexpected token in method <arg>. (4)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_SIGNAL:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_SIGNAL_NAME;
+ else {
+ log_error("Unexpected <signal> attribute %s.", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_OPEN) {
+ if (streq_ptr(name, "arg"))
+ state = STATE_SIGNAL_ARG;
+ else if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected <signal> tag %s.", name);
+ return -EINVAL;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "signal")))
+
+ state = STATE_INTERFACE;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <signal>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_SIGNAL_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_SIGNAL;
+ else {
+ log_error("Unexpected token in <signal>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+
+ case STATE_SIGNAL_ARG:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_SIGNAL_ARG_NAME;
+ else if (streq_ptr(name, "type"))
+ state = STATE_SIGNAL_ARG_TYPE;
+ else {
+ log_error("Unexpected signal <arg> attribute %s.", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_OPEN) {
+ if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected signal <arg> tag %s.", name);
+ return -EINVAL;
+ }
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+
+ state = STATE_SIGNAL;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in signal <arg> (1).");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_SIGNAL_ARG_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_SIGNAL_ARG;
+ else {
+ log_error("Unexpected token in signal <arg> (2).");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_SIGNAL_ARG_TYPE:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_SIGNAL_ARG;
+ else {
+ log_error("Unexpected token in signal <arg> (3).");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_PROPERTY:
+
+ if (t == XML_ATTRIBUTE_NAME) {
+ if (streq_ptr(name, "name"))
+ state = STATE_PROPERTY_NAME;
+ else if (streq_ptr(name, "type"))
+ state = STATE_PROPERTY_TYPE;
+ else if (streq_ptr(name, "access"))
+ state = STATE_PROPERTY_ACCESS;
+ else {
+ log_error("Unexpected <property> attribute %s.", name);
+ return -EBADMSG;
+ }
+ } else if (t == XML_TAG_OPEN) {
+
+ if (streq_ptr(name, "annotation")) {
+ r = parse_xml_annotation(p, xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected <property> tag %s.", name);
+ return -EINVAL;
+ }
+
+ } else if (t == XML_TAG_CLOSE_EMPTY ||
+ (t == XML_TAG_CLOSE && streq_ptr(name, "property")))
+
+ state = STATE_INTERFACE;
+
+ else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token in <property>. (1)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_PROPERTY_NAME:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_PROPERTY;
+ else {
+ log_error("Unexpected token in <property>. (2)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_PROPERTY_TYPE:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_PROPERTY;
+ else {
+ log_error("Unexpected token in <property>. (3)");
+ return -EINVAL;
+ }
+
+ break;
+
+ case STATE_PROPERTY_ACCESS:
+
+ if (t == XML_ATTRIBUTE_VALUE)
+ state = STATE_PROPERTY;
+ else {
+ log_error("Unexpected token in <property>. (4)");
+ return -EINVAL;
+ }
+
+ break;
+ }
+ }
+}
+
+static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *paths) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *xml, *p;
+ void *xml_state = NULL;
+ int r;
+
+ r = sd_bus_call_method(bus, service, path, "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
+ if (r < 0) {
+ log_error("Failed to introspect object %s of service %s: %s", path, service, bus_error_message(&error, r));
+ return r;
+ }
+
+ r = sd_bus_message_read(reply, "s", &xml);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ /* fputs(xml, stdout); */
+
+ p = xml;
+ for (;;) {
+ _cleanup_free_ char *name = NULL;
+
+ r = xml_tokenize(&p, &name, &xml_state, NULL);
+ if (r < 0) {
+ log_error("XML parse error");
+ return r;
+ }
+
+ if (r == XML_END)
+ break;
+
+ if (r == XML_TAG_OPEN) {
+
+ if (streq(name, "node")) {
+ r = parse_xml_node(path, paths, &p, &xml_state);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("Unexpected tag '%s' in introspection data.", name);
+ return -EBADMSG;
+ }
+ } else if (r != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ log_error("Unexpected token.");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int tree_one(sd_bus *bus, const char *service, const char *prefix) {
+ _cleanup_set_free_free_ Set *paths = NULL, *done = NULL, *failed = NULL;
+ _cleanup_free_ char **l = NULL;
+ char *m;
+ int r;
+
+ paths = set_new(&string_hash_ops);
+ if (!paths)
+ return log_oom();
+
+ done = set_new(&string_hash_ops);
+ if (!done)
+ return log_oom();
+
+ failed = set_new(&string_hash_ops);
+ if (!failed)
+ return log_oom();
+
+ m = strdup("/");
+ if (!m)
+ return log_oom();
+
+ r = set_put(paths, m);
+ if (r < 0) {
+ free(m);
+ return log_oom();
+ }
+
+ for (;;) {
+ _cleanup_free_ char *p = NULL;
+ int q;
+
+ p = set_steal_first(paths);
+ if (!p)
+ break;
+
+ if (set_contains(done, p) ||
+ set_contains(failed, p))
+ continue;
+
+ q = find_nodes(bus, service, p, paths);
+ if (q < 0) {
+ if (r >= 0)
+ r = q;
+
+ q = set_put(failed, p);
+ } else
+ q = set_put(done, p);
+
+ if (q < 0)
+ return log_oom();
+
+ assert(q != 0);
+ p = NULL;
+ }
+
+ l = set_get_strv(done);
+ if (!l)
+ return log_oom();
+
+ strv_sort(l);
+ print_tree(prefix, l);
+
+ fflush(stdout);
+
+ return r;
+}
+
+static int tree(sd_bus *bus, char **argv) {
+ char **i;
+ int r = 0;
+
+ if (!arg_unique && !arg_acquired)
+ arg_acquired = true;
+
+ if (strv_length(argv) <= 1) {
+ _cleanup_strv_free_ char **names = NULL;
+ bool not_first = true;
+
+ r = sd_bus_list_names(bus, &names, NULL);
+ if (r < 0) {
+ log_error("Failed to get name list: %s", strerror(-r));
+ return r;
+ }
+
+ pager_open_if_enabled();
+
+ STRV_FOREACH(i, names) {
+ int q;
+
+ if (!arg_unique && (*i)[0] == ':')
+ continue;
+
+ if (!arg_acquired && (*i)[0] == ':')
+ continue;
+
+ if (not_first)
+ printf("\n");
+
+ printf("Service %s:\n", *i);
+
+ q = tree_one(bus, *i, "\t");
+ if (q < 0 && r >= 0)
+ r = q;
+
+ not_first = true;
+ }
+ } else {
+ pager_open_if_enabled();
+
+ STRV_FOREACH(i, argv+1) {
+ int q;
+
+ if (i > argv+1)
+ printf("\n");
+
+ if (argv[2])
+ printf("Service %s:\n", *i);
+
+ q = tree_one(bus, *i, NULL);
+ if (q < 0 && r >= 0)
+ r = q;
+ }
+ }
+
+ return r;
+}
+
static int message_dump(sd_bus_message *m, FILE *f) {
return bus_message_dump(m, f, true);
}
" --unique Only show unique names\n"
" --acquired Only show acquired names\n"
" --activatable Only show activatable names\n"
- " --match=MATCH Only show matching messages\n\n"
+ " --match=MATCH Only show matching messages\n"
+ " --list Don't show tree, but simple object path list\n\n"
"Commands:\n"
" list List bus names\n"
+ " tree [SERVICE...] Show object tree of service\n"
" monitor [SERVICE...] Show bus traffic\n"
" capture [SERVICE...] Capture bus traffic as pcap\n"
" status NAME Show name status\n"
ARG_ACQUIRED,
ARG_ACTIVATABLE,
ARG_SIZE,
+ ARG_LIST,
};
static const struct option options[] = {
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "size", required_argument, NULL, ARG_SIZE },
+ { "list", no_argument, NULL, ARG_LIST },
{},
};
break;
}
+ case ARG_LIST:
+ arg_list = true;
+ break;
+
case 'H':
arg_transport = BUS_TRANSPORT_REMOTE;
arg_host = optarg;
assert_not_reached("Unhandled option");
}
- if (!arg_unique && !arg_acquired && !arg_activatable)
- arg_unique = arg_acquired = arg_activatable = true;
-
return 1;
}
if (streq(argv[optind], "status"))
return status(bus, argv + optind);
+ if (streq(argv[optind], "tree"))
+ return tree(bus, argv + optind);
+
if (streq(argv[optind], "help"))
return help();
projects / platform / upstream / systemd.git / commitdiff