X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fubox.git;a=blobdiff_plain;f=log%2Flogd.c;h=9931723f6974fd35c156bc94345df0f858537f2b;hp=27d3cac8abdda9227e51f0d113cbef09bad5d3c7;hb=a0819044b14ec34450d2fcab33fb15232e8164fa;hpb=ab5b47397cc143798ba2f367f04579e5b5b82070

diff --git a/log/logd.c b/log/logd.c
index 27d3cac..9931723 100644
--- a/log/logd.c
+++ b/log/logd.c
@@ -31,8 +31,18 @@ static struct blob_buf b;
 static struct ubus_auto_conn conn;
 static LIST_HEAD(clients);
 
-static const struct blobmsg_policy read_policy =
-	{ .name = "lines", .type = BLOBMSG_TYPE_INT32 };
+enum {
+	READ_LINES,
+	READ_STREAM,
+	READ_ONESHOT,
+	__READ_MAX
+};
+
+static const struct blobmsg_policy read_policy[__READ_MAX] = {
+	[READ_LINES] = { .name = "lines", .type = BLOBMSG_TYPE_INT32 },
+	[READ_STREAM] = { .name = "stream", .type = BLOBMSG_TYPE_BOOL },
+	[READ_ONESHOT] = { .name = "oneshot", .type = BLOBMSG_TYPE_BOOL },
+};
 
 static const struct blobmsg_policy write_policy =
 	{ .name = "event", .type = BLOBMSG_TYPE_STRING };
@@ -60,48 +70,91 @@ static void client_notify_state(struct ustream *s)
 	client_close(s);
 }
 
+static void client_notify_write(struct ustream *s, int bytes)
+{
+	if (ustream_pending_data(s, true))
+		return;
+
+	client_close(s);
+}
+
+static void
+log_fill_msg(struct blob_buf *b, struct log_head *l)
+{
+	blobmsg_add_string(b, "msg", l->data);
+	blobmsg_add_u32(b, "id", l->id);
+	blobmsg_add_u32(b, "priority", l->priority);
+	blobmsg_add_u32(b, "source", l->source);
+	blobmsg_add_u64(b, "time", (((__u64) l->ts.tv_sec) * 1000) + (l->ts.tv_nsec / 1000000));
+}
+
 static int
 read_log(struct ubus_context *ctx, struct ubus_object *obj,
 		struct ubus_request_data *req, const char *method,
 		struct blob_attr *msg)
 {
 	struct client *cl;
-	struct blob_attr *tb;
+	struct blob_attr *tb[__READ_MAX] = {};
 	struct log_head *l;
 	int count = 0;
 	int fds[2];
 	int ret;
+	bool stream = true;
+	bool oneshot = false;
+	void *c, *e;
+
+	if (!stream)
+		count = 100;
 
 	if (msg) {
-		blobmsg_parse(&read_policy, 1, &tb, blob_data(msg), blob_len(msg));
-		if (tb)
-			count = blobmsg_get_u32(tb);
+		blobmsg_parse(read_policy, __READ_MAX, tb, blob_data(msg), blob_len(msg));
+		if (tb[READ_LINES])
+			count = blobmsg_get_u32(tb[READ_LINES]);
+		if (tb[READ_STREAM])
+			stream = blobmsg_get_bool(tb[READ_STREAM]);
+		if (tb[READ_ONESHOT])
+			oneshot = blobmsg_get_bool(tb[READ_ONESHOT]);
 	}
 
-	if (pipe(fds) == -1) {
-		fprintf(stderr, "logd: failed to create pipe: %s\n", strerror(errno));
-		return -1;
-	}
-	ubus_request_set_fd(ctx, req, fds[0]);
-	cl = calloc(1, sizeof(*cl));
-	cl->s.stream.notify_state = client_notify_state;
-	cl->fd = fds[1];
-	ustream_fd_init(&cl->s, cl->fd);
-	list_add(&cl->list, &clients);
 	l = log_list(count, NULL);
-	while ((!tb || count) && l) {
+	if (stream) {
+		if (pipe(fds) == -1) {
+			fprintf(stderr, "logd: failed to create pipe: %s\n", strerror(errno));
+			return -1;
+		}
+
+		ubus_request_set_fd(ctx, req, fds[0]);
+		cl = calloc(1, sizeof(*cl));
+		cl->s.stream.notify_state = client_notify_state;
+		cl->fd = fds[1];
+		ustream_fd_init(&cl->s, cl->fd);
+		list_add(&cl->list, &clients);
+		while ((!tb[READ_LINES] || count) && l) {
+			blob_buf_init(&b, 0);
+			log_fill_msg(&b, l);
+			l = log_list(count, l);
+			ret = ustream_write(&cl->s.stream, (void *) b.head, blob_len(b.head) + sizeof(struct blob_attr), false);
+			if (ret < 0)
+				break;
+		}
+
+		if (oneshot) {
+			cl->s.stream.notify_write = client_notify_write;
+			client_notify_write(&cl->s.stream, 0);
+		}
+	} else {
 		blob_buf_init(&b, 0);
-		blobmsg_add_string(&b, "msg", l->data);
-		blobmsg_add_u32(&b, "id", l->id);
-		blobmsg_add_u32(&b, "priority", l->priority);
-		blobmsg_add_u32(&b, "source", l->source);
-		blobmsg_add_u64(&b, "time", l->ts.tv_sec * 1000LL);
-		l = log_list(count, l);
-		ret = ustream_write(&cl->s.stream, (void *) b.head, blob_len(b.head) + sizeof(struct blob_attr), false);
-		blob_buf_free(&b);
-		if (ret < 0)
-			break;
+		c = blobmsg_open_array(&b, "log");
+		while ((!tb[READ_LINES] || count) && l) {
+			e = blobmsg_open_table(&b, NULL);
+			log_fill_msg(&b, l);
+			blobmsg_close_table(&b, e);
+			l = log_list(count, l);
+		}
+		blobmsg_close_array(&b, c);
+		ubus_send_reply(ctx, req, b.head);
 	}
+	blob_buf_free(&b);
 	return 0;
 }
 
@@ -114,10 +167,18 @@ write_log(struct ubus_context *ctx, struct ubus_object *obj,
 	char *event;
 
 	if (msg) {
+		int len;
+
 		blobmsg_parse(&write_policy, 1, &tb, blob_data(msg), blob_len(msg));
 		if (tb) {
 			event = blobmsg_get_string(tb);
-			log_add(event, strlen(event) + 1, SOURCE_SYSLOG);
+			len = strlen(event) + 1;
+			if (len > LOG_LINE_SIZE) {
+				len = LOG_LINE_SIZE;
+				event[len - 1] = 0;
+			}
+
+			log_add(event, len, SOURCE_SYSLOG);
 		}
 	}
 
@@ -125,7 +186,7 @@ write_log(struct ubus_context *ctx, struct ubus_object *obj,
 }
 
 static const struct ubus_method log_methods[] = {
-	{ .name = "read", .handler = read_log, .policy = &read_policy, .n_policy = 1 },
+	UBUS_METHOD("read", read_log, read_policy),
 	{ .name = "write", .handler = write_log, .policy = &write_policy, .n_policy = 1 },
 };
 
@@ -197,6 +258,7 @@ main(int argc, char **argv)
 	uloop_run();
 	log_shutdown();
 	uloop_done();
+	ubus_auto_shutdown(&conn);
 
 	return 0;
 }