cli: add monitor support

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
This commit is contained in:
Felix Fietkau 2015-11-19 22:32:29 +01:00
parent 44a62711e0
commit 259450f414

192
cli.c
View file

@ -20,6 +20,21 @@ static struct blob_buf b;
static int timeout = 30;
static bool simple_output = false;
static int verbose = 0;
static int monitor_dir = -1;
static uint32_t monitor_mask;
static const char * const monitor_types[] = {
[UBUS_MSG_HELLO] = "hello",
[UBUS_MSG_STATUS] = "status",
[UBUS_MSG_DATA] = "data",
[UBUS_MSG_PING] = "ping",
[UBUS_MSG_LOOKUP] = "lookup",
[UBUS_MSG_INVOKE] = "invoke",
[UBUS_MSG_ADD_OBJECT] = "add_object",
[UBUS_MSG_REMOVE_OBJECT] = "remove_object",
[UBUS_MSG_SUBSCRIBE] = "subscribe",
[UBUS_MSG_UNSUBSCRIBE] = "unsubscribe",
[UBUS_MSG_NOTIFY] = "notify",
};
static const char *format_type(void *priv, struct blob_attr *attr)
{
@ -284,6 +299,160 @@ static int ubus_cli_wait_for(struct ubus_context *ctx, int argc, char **argv)
return ret;
}
static const char *
ubus_cli_msg_type(uint32_t type)
{
const char *ret = NULL;
static char unk_type[16];
if (type < ARRAY_SIZE(monitor_types))
ret = monitor_types[type];
if (!ret) {
snprintf(unk_type, sizeof(unk_type), "%d", type);
ret = unk_type;
}
return ret;
}
static char *
ubus_cli_get_monitor_data(struct blob_attr *data)
{
static const struct blob_attr_info policy[UBUS_ATTR_MAX] = {
[UBUS_ATTR_STATUS] = { .type = BLOB_ATTR_INT32 },
[UBUS_ATTR_OBJPATH] = { .type = BLOB_ATTR_STRING },
[UBUS_ATTR_OBJID] = { .type = BLOB_ATTR_INT32 },
[UBUS_ATTR_METHOD] = { .type = BLOB_ATTR_STRING },
[UBUS_ATTR_OBJTYPE] = { .type = BLOB_ATTR_INT32 },
[UBUS_ATTR_SIGNATURE] = { .type = BLOB_ATTR_NESTED },
[UBUS_ATTR_DATA] = { .type = BLOB_ATTR_NESTED },
[UBUS_ATTR_ACTIVE] = { .type = BLOB_ATTR_INT8 },
[UBUS_ATTR_NO_REPLY] = { .type = BLOB_ATTR_INT8 },
[UBUS_ATTR_USER] = { .type = BLOB_ATTR_STRING },
[UBUS_ATTR_GROUP] = { .type = BLOB_ATTR_STRING },
};
static const char * const names[UBUS_ATTR_MAX] = {
[UBUS_ATTR_STATUS] = "status",
[UBUS_ATTR_OBJPATH] = "objpath",
[UBUS_ATTR_OBJID] = "objid",
[UBUS_ATTR_METHOD] = "method",
[UBUS_ATTR_OBJTYPE] = "objtype",
[UBUS_ATTR_SIGNATURE] = "signature",
[UBUS_ATTR_DATA] = "data",
[UBUS_ATTR_ACTIVE] = "active",
[UBUS_ATTR_NO_REPLY] = "no_reply",
[UBUS_ATTR_USER] = "user",
[UBUS_ATTR_GROUP] = "group",
};
struct blob_attr *tb[UBUS_ATTR_MAX];
int i;
blob_buf_init(&b, 0);
blob_parse(data, tb, policy, UBUS_ATTR_MAX);
for (i = 0; i < UBUS_ATTR_MAX; i++) {
const char *n = names[i];
struct blob_attr *v = tb[i];
if (!tb[i] || !n)
continue;
switch(policy[i].type) {
case BLOB_ATTR_INT32:
blobmsg_add_u32(&b, n, blob_get_int32(v));
break;
case BLOB_ATTR_STRING:
blobmsg_add_string(&b, n, blob_data(v));
break;
case BLOB_ATTR_INT8:
blobmsg_add_u8(&b, n, !!blob_get_int8(v));
break;
case BLOB_ATTR_NESTED:
blobmsg_add_field(&b, BLOBMSG_TYPE_TABLE, n, blobmsg_data(v), blobmsg_data_len(v));
break;
}
}
return blobmsg_format_json(b.head, true);
}
static void
ubus_cli_monitor_cb(struct ubus_context *ctx, uint32_t seq, struct blob_attr *msg)
{
static const struct blob_attr_info policy[UBUS_MONITOR_MAX] = {
[UBUS_MONITOR_CLIENT] = { .type = BLOB_ATTR_INT32 },
[UBUS_MONITOR_PEER] = { .type = BLOB_ATTR_INT32 },
[UBUS_MONITOR_SEND] = { .type = BLOB_ATTR_INT8 },
[UBUS_MONITOR_TYPE] = { .type = BLOB_ATTR_INT32 },
[UBUS_MONITOR_DATA] = { .type = BLOB_ATTR_NESTED },
};
struct blob_attr *tb[UBUS_MONITOR_MAX];
uint32_t client, peer, type;
bool send;
char *data;
blob_parse(msg, tb, policy, UBUS_MONITOR_MAX);
if (!tb[UBUS_MONITOR_CLIENT] ||
!tb[UBUS_MONITOR_PEER] ||
!tb[UBUS_MONITOR_SEND] ||
!tb[UBUS_MONITOR_TYPE] ||
!tb[UBUS_MONITOR_DATA]) {
printf("Invalid monitor msg\n");
return;
}
send = blob_get_int32(tb[UBUS_MONITOR_SEND]);
client = blob_get_int32(tb[UBUS_MONITOR_CLIENT]);
peer = blob_get_int32(tb[UBUS_MONITOR_PEER]);
type = blob_get_int32(tb[UBUS_MONITOR_TYPE]);
if (monitor_mask && type < 32 && !(monitor_mask & (1 << type)))
return;
if (monitor_dir >= 0 && send != monitor_dir)
return;
data = ubus_cli_get_monitor_data(tb[UBUS_MONITOR_DATA]);
printf("%s %08x #%08x %14s: %s\n", send ? "->" : "<-", client, peer, ubus_cli_msg_type(type), data);
free(data);
fflush(stdout);
}
static int ubus_cli_monitor(struct ubus_context *ctx, int argc, char **argv)
{
int ret;
uloop_init();
ubus_add_uloop(ctx);
ctx->monitor_cb = ubus_cli_monitor_cb;
ret = ubus_monitor_start(ctx);
if (ret)
return ret;
uloop_run();
uloop_done();
ubus_monitor_stop(ctx);
return 0;
}
static int add_monitor_type(const char *type)
{
int i;
for (i = 0; i < ARRAY_SIZE(monitor_types); i++) {
if (!monitor_types[i] || strcmp(monitor_types[i], type) != 0)
continue;
monitor_mask |= 1 << i;
return 0;
}
return -1;
}
static int usage(const char *prog)
{
@ -294,6 +463,9 @@ static int usage(const char *prog)
" -t <timeout>: Set the timeout (in seconds) for a command to complete\n"
" -S: Use simplified output (for scripts)\n"
" -v: More verbose output\n"
" -m <type>: (for monitor): include a specific message type\n"
" (can be used more than once)\n"
" -M <r|t> (for monitor): only capture received or transmitted traffic\n"
"\n"
"Commands:\n"
" - list [<path>] List objects\n"
@ -301,6 +473,7 @@ static int usage(const char *prog)
" - listen [<path>...] Listen for events\n"
" - send <type> [<message>] Send an event\n"
" - wait_for <object> [<object>...] Wait for multiple objects to appear on ubus\n"
" - monitor Monitor ubus traffic\n"
"\n", prog);
return 1;
}
@ -315,6 +488,7 @@ struct {
{ "listen", ubus_cli_listen },
{ "send", ubus_cli_send },
{ "wait_for", ubus_cli_wait_for },
{ "monitor", ubus_cli_monitor },
};
int main(int argc, char **argv)
@ -327,7 +501,7 @@ int main(int argc, char **argv)
progname = argv[0];
while ((ch = getopt(argc, argv, "vs:t:S")) != -1) {
while ((ch = getopt(argc, argv, "m:M:vs:t:S")) != -1) {
switch (ch) {
case 's':
ubus_socket = optarg;
@ -341,6 +515,22 @@ int main(int argc, char **argv)
case 'v':
verbose++;
break;
case 'm':
if (add_monitor_type(optarg))
return usage(progname);
break;
case 'M':
switch (optarg[0]) {
case 'r':
monitor_dir = 0;
break;
case 't':
monitor_dir = 1;
break;
default:
return usage(progname);
}
break;
default:
return usage(progname);
}