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Code Issues Releases Wiki Activity

miraclectl: add 'show-link' verb

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The new show-link command lists detailed information of a given link.
Useful for debugging and introspection.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
This commit is contained in:
David Herrmann 2014-02-10 13:28:07 +01:00
parent 27a74298e9
commit a765bd29b8
1 changed files with 100 additions and 3 deletions
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97
src/miraclectl.c
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@ -280,6 +280,101 @@ static int verb_list(sd_bus *bus, char **args, unsigned int n)
return 0;
}
static int verb_show_link(sd_bus *bus, char **args, unsigned int n)
{
_cleanup_sd_bus_error_ sd_bus_error err = SD_BUS_ERROR_NULL;
_cleanup_sd_bus_message_ sd_bus_message *m = NULL;
_cleanup_free_ char *path = NULL, *name = NULL;
_cleanup_free_ char *type = NULL, *iface = NULL, *fname = NULL;
const char *t;
int r;
name = sd_bus_label_escape(args[1]);
if (!name)
return log_ENOMEM();
path = shl_strcat("/org/freedesktop/miracle/link/", name);
if (!path)
return log_ENOMEM();
r = sd_bus_call_method(bus,
"org.freedesktop.miracle",
path,
"org.freedesktop.DBus.Properties",
"GetAll",
&err,
&m,
"s", "org.freedesktop.miracle.Link");
if (r < 0) {
log_error("cannot retrieve link %s: %s",
args[1], bus_error_message(&err, r));
return r;
}
r = sd_bus_message_enter_container(m, 'a', "{sv}");
if (r < 0)
return log_bus_parser(r);
while ((r = sd_bus_message_enter_container(m, 'e', "sv")) > 0) {
r = sd_bus_message_read(m, "s", &t);
if (r < 0)
return log_bus_parser(r);
if (!strcmp(t, "Type")) {
r = bus_message_read_basic_variant(m, "s", &t);
if (r < 0)
return log_bus_parser(r);
free(type);
type = strdup(t);
if (!type)
return log_ENOMEM();
} else if (!strcmp(t, "Interface")) {
r = bus_message_read_basic_variant(m, "s", &t);
if (r < 0)
return log_bus_parser(r);
free(iface);
iface = strdup(t);
if (!iface)
return log_ENOMEM();
} else if (!strcmp(t, "Name")) {
r = bus_message_read_basic_variant(m, "s", &t);
if (r < 0)
return log_bus_parser(r);
free(fname);
fname = strdup(t);
if (!fname)
return log_ENOMEM();
} else {
r = sd_bus_message_skip(m, "v");
if (r < 0)
return log_bus_parser(r);
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return log_bus_parser(r);
}
if (r < 0)
return log_bus_parser(r);
r = sd_bus_message_exit_container(m);
if (r < 0)
return log_bus_parser(r);
printf("Link=%s\n", args[1]);
if (type)
printf("Type=%s\n", type);
if (iface)
printf("Interface=%s\n", iface);
if (fname)
printf("Name=%s\n", fname);
return 0;
}
static int verb_add_link(sd_bus *bus, char **args, unsigned int n)
{
_cleanup_sd_bus_error_ sd_bus_error err = SD_BUS_ERROR_NULL;
@ -348,6 +443,7 @@ static int help(void)
"\n"
"Commands:\n"
" list List managed links and their peers\n"
" show-link LINK... Show details of given link\n"
" add-link LINK... Start managing the given link\n"
" remove-link LINK... Stop managing the given link\n"
, program_invocation_short_name);
@ -405,6 +501,7 @@ static int miraclectl_main(sd_bus *bus, int argc, char *argv[])
int (*dispatch) (sd_bus *bus, char **args, unsigned int n);
} verbs[] = {
{ "list", LESS, 1, verb_list },
{ "show-link", EQUAL, 2, verb_show_link },
{ "add-link", EQUAL, 3, verb_add_link },
{ "remove-link", EQUAL, 2, verb_remove_link },
};