/*
- * Copyright (C) 2011-2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2011-2014 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* GNU General Public License for more details.
*/
+#include <unistd.h>
#include "libubus.h"
#include "libubus-internal.h"
}
}
+int __hidden __ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
+ struct blob_attr *msg, int cmd, uint32_t peer)
+{
+
+ if (msg && blob_pad_len(msg) > UBUS_MAX_MSGLEN)
+ return -1;
+
+ INIT_LIST_HEAD(&req->list);
+ INIT_LIST_HEAD(&req->pending);
+ req->ctx = ctx;
+ req->peer = peer;
+ req->seq = ++ctx->request_seq;
+
+ return ubus_send_msg(ctx, req->seq, msg, cmd, peer, req->fd);
+}
+
+int __hidden ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
+ struct blob_attr *msg, int cmd, uint32_t peer)
+{
+ memset(req, 0, sizeof(*req));
+
+ req->fd = -1;
+
+ return __ubus_start_request(ctx, req, msg, cmd, peer);
+}
+
+
void ubus_abort_request(struct ubus_context *ctx, struct ubus_request *req)
{
- if (!list_empty(&req->list))
+ if (list_empty(&req->list))
return;
req->cancelled = true;
list_add(&req->list, &ctx->requests);
}
+static void
+ubus_req_complete_cb(struct ubus_request *req)
+{
+ ubus_complete_handler_t cb = req->complete_cb;
+
+ if (!cb)
+ return;
+
+ req->complete_cb = NULL;
+ cb(req, req->status_code);
+}
+
+static void
+ubus_set_req_status(struct ubus_request *req, int ret)
+{
+ if (!list_empty(&req->list))
+ list_del_init(&req->list);
+
+ req->status_msg = true;
+ req->status_code = ret;
+ if (!req->blocked)
+ ubus_req_complete_cb(req);
+}
+
static void ubus_sync_req_cb(struct ubus_request *req, int ret)
{
req->status_msg = true;
uloop_end();
}
-struct ubus_sync_req_cb {
- struct uloop_timeout timeout;
- struct ubus_request *req;
-};
-
-static void ubus_sync_req_timeout_cb(struct uloop_timeout *timeout)
+static int64_t get_time_msec(void)
{
- struct ubus_sync_req_cb *cb;
+ struct timespec ts;
+ int64_t val;
- cb = container_of(timeout, struct ubus_sync_req_cb, timeout);
- ubus_sync_req_cb(cb->req, UBUS_STATUS_TIMEOUT);
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ val = (int64_t) ts.tv_sec * 1000LL;
+ val += ts.tv_nsec / 1000000LL;
+ return val;
}
int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req,
- int timeout)
+ int req_timeout)
{
- struct ubus_sync_req_cb cb;
ubus_complete_handler_t complete_cb = req->complete_cb;
bool registered = ctx->sock.registered;
int status = UBUS_STATUS_NO_DATA;
+ int64_t timeout = 0, time_end = 0;
if (!registered) {
- uloop_init();
ubus_add_uloop(ctx);
}
- if (timeout) {
- memset(&cb, 0, sizeof(cb));
- cb.req = req;
- cb.timeout.cb = ubus_sync_req_timeout_cb;
- uloop_timeout_set(&cb.timeout, timeout);
- }
+ if (req_timeout)
+ time_end = get_time_msec() + req_timeout;
ubus_complete_request_async(ctx, req);
req->complete_cb = ubus_sync_req_cb;
ctx->stack_depth++;
while (!req->status_msg) {
bool cancelled = uloop_cancelled;
+
uloop_cancelled = false;
- uloop_run();
+ if (req_timeout) {
+ timeout = time_end - get_time_msec();
+ if (timeout <= 0) {
+ ubus_set_req_status(req, UBUS_STATUS_TIMEOUT);
+ uloop_cancelled = cancelled;
+ break;
+ }
+ }
+ ubus_poll_data(ctx, (unsigned int) timeout);
+
uloop_cancelled = cancelled;
+ if (ctx->sock.eof) {
+ ubus_set_req_status(req, UBUS_STATUS_CONNECTION_FAILED);
+ break;
+ }
}
ctx->stack_depth--;
-
- if (timeout)
- uloop_timeout_cancel(&cb.timeout);
+ if (ctx->stack_depth)
+ uloop_cancelled = true;
if (req->status_msg)
status = req->status_code;
if (req->complete_cb)
req->complete_cb(req, status);
- if (!registered)
+ if (!registered) {
uloop_fd_delete(&ctx->sock);
- if (!ctx->stack_depth)
- ubus_process_pending_msg(ctx);
+ if (!ctx->stack_depth)
+ ctx->pending_timer.cb(&ctx->pending_timer);
+ }
return status;
}
blob_buf_init(&b, 0);
blob_put_int32(&b, UBUS_ATTR_STATUS, ret);
blob_put_int32(&b, UBUS_ATTR_OBJID, req->object);
- ubus_send_msg(ctx, req->seq, b.head, UBUS_MSG_STATUS, req->peer);
+ ubus_send_msg(ctx, req->seq, b.head, UBUS_MSG_STATUS, req->peer, req->fd);
}
int ubus_send_reply(struct ubus_context *ctx, struct ubus_request_data *req,
blob_buf_init(&b, 0);
blob_put_int32(&b, UBUS_ATTR_OBJID, req->object);
blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
- ret = ubus_send_msg(ctx, req->seq, b.head, UBUS_MSG_DATA, req->peer);
+ ret = ubus_send_msg(ctx, req->seq, b.head, UBUS_MSG_DATA, req->peer, -1);
if (ret < 0)
return UBUS_STATUS_NO_DATA;
return 0;
}
-int ubus_invoke_async(struct ubus_context *ctx, uint32_t obj, const char *method,
- struct blob_attr *msg, struct ubus_request *req)
+int ubus_invoke_async_fd(struct ubus_context *ctx, uint32_t obj,
+ const char *method, struct blob_attr *msg,
+ struct ubus_request *req, int fd)
{
blob_buf_init(&b, 0);
blob_put_int32(&b, UBUS_ATTR_OBJID, obj);
if (msg)
blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
- if (ubus_start_request(ctx, req, b.head, UBUS_MSG_INVOKE, obj) < 0)
+ memset(req, 0, sizeof(*req));
+ req->fd = fd;
+ if (__ubus_start_request(ctx, req, b.head, UBUS_MSG_INVOKE, obj) < 0)
return UBUS_STATUS_INVALID_ARGUMENT;
-
return 0;
}
-int ubus_invoke(struct ubus_context *ctx, uint32_t obj, const char *method,
- struct blob_attr *msg, ubus_data_handler_t cb, void *priv,
- int timeout)
+int ubus_invoke_fd(struct ubus_context *ctx, uint32_t obj, const char *method,
+ struct blob_attr *msg, ubus_data_handler_t cb, void *priv,
+ int timeout, int fd)
{
struct ubus_request req;
+ int rc;
+
+ rc = ubus_invoke_async_fd(ctx, obj, method, msg, &req, fd);
+ if (rc)
+ return rc;
- ubus_invoke_async(ctx, obj, method, msg, &req);
req.data_cb = cb;
req.priv = priv;
return ubus_complete_request(ctx, &req, timeout);
}
-static void ubus_req_complete_cb(struct ubus_request *req)
+static void
+ubus_notify_complete_cb(struct ubus_request *req, int ret)
{
- ubus_complete_handler_t cb = req->complete_cb;
+ struct ubus_notify_request *nreq;
- if (!cb)
+ nreq = container_of(req, struct ubus_notify_request, req);
+ if (!nreq->complete_cb)
return;
- req->complete_cb = NULL;
- cb(req, req->status_code);
+ nreq->complete_cb(nreq, 0, 0);
+}
+
+static int
+__ubus_notify_async(struct ubus_context *ctx, struct ubus_object *obj,
+ const char *type, struct blob_attr *msg,
+ struct ubus_notify_request *req, bool reply)
+{
+ memset(req, 0, sizeof(*req));
+
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id);
+ blob_put_string(&b, UBUS_ATTR_METHOD, type);
+
+ if (!reply)
+ blob_put_int8(&b, UBUS_ATTR_NO_REPLY, true);
+
+ if (msg)
+ blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
+
+ if (ubus_start_request(ctx, &req->req, b.head, UBUS_MSG_NOTIFY, obj->id) < 0)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ /* wait for status message from ubusd first */
+ req->req.notify = true;
+ req->pending = 1;
+ req->id[0] = obj->id;
+ req->req.complete_cb = ubus_notify_complete_cb;
+
+ return 0;
}
-static bool ubus_get_status(struct ubus_msghdr *hdr, int *ret)
+int ubus_notify_async(struct ubus_context *ctx, struct ubus_object *obj,
+ const char *type, struct blob_attr *msg,
+ struct ubus_notify_request *req)
{
- struct blob_attr **attrbuf = ubus_parse_msg(hdr->data);
+ return __ubus_notify_async(ctx, obj, type, msg, req, true);
+}
+
+int ubus_notify(struct ubus_context *ctx, struct ubus_object *obj,
+ const char *type, struct blob_attr *msg, int timeout)
+{
+ struct ubus_notify_request req;
+ int ret;
+
+ ret = __ubus_notify_async(ctx, obj, type, msg, &req, timeout >= 0);
+ if (ret < 0)
+ return ret;
+
+ if (timeout < 0) {
+ ubus_abort_request(ctx, &req.req);
+ return 0;
+ }
+
+ return ubus_complete_request(ctx, &req.req, timeout);
+}
+
+static bool ubus_get_status(struct ubus_msghdr_buf *buf, int *ret)
+{
+ struct blob_attr **attrbuf = ubus_parse_msg(buf->data);
if (!attrbuf[UBUS_ATTR_STATUS])
return false;
}
static int
-ubus_process_req_status(struct ubus_request *req, struct ubus_msghdr *hdr)
+ubus_process_req_status(struct ubus_request *req, struct ubus_msghdr_buf *buf)
{
int ret = UBUS_STATUS_INVALID_ARGUMENT;
- if (!list_empty(&req->list))
- list_del_init(&req->list);
-
- ubus_get_status(hdr, &ret);
- req->peer = hdr->peer;
- req->status_msg = true;
- req->status_code = ret;
- if (!req->blocked)
- ubus_req_complete_cb(req);
+ ubus_get_status(buf, &ret);
+ req->peer = buf->hdr.peer;
+ ubus_set_req_status(req, ret);
return ret;
}
static void
-ubus_process_req_data(struct ubus_request *req, struct ubus_msghdr *hdr)
+ubus_process_req_data(struct ubus_request *req, struct ubus_msghdr_buf *buf)
{
struct ubus_pending_data *data;
int len;
if (!req->blocked) {
req->blocked = true;
- req_data_cb(req, hdr->type, hdr->data);
+ req_data_cb(req, buf->hdr.type, buf->data);
__ubus_process_req_data(req);
req->blocked = false;
return;
}
- len = blob_raw_len(hdr->data);
+ len = blob_raw_len(buf->data);
data = calloc(1, sizeof(*data) + len);
if (!data)
return;
- data->type = hdr->type;
- memcpy(data->data, hdr->data, len);
+ data->type = buf->hdr.type;
+ memcpy(data->data, buf->data, len);
list_add(&data->list, &req->pending);
}
+static int
+ubus_find_notify_id(struct ubus_notify_request *n, uint32_t objid)
+{
+ uint32_t pending = n->pending;
+ int i;
+
+ for (i = 0; pending; i++, pending >>= 1) {
+ if (!(pending & 1))
+ continue;
+
+ if (n->id[i] == objid)
+ return i;
+ }
+
+ return -1;
+}
+
static struct ubus_request *
-ubus_find_request(struct ubus_context *ctx, uint32_t seq, uint32_t peer)
+ubus_find_request(struct ubus_context *ctx, uint32_t seq, uint32_t peer, int *id)
{
struct ubus_request *req;
list_for_each_entry(req, &ctx->requests, list) {
- if (seq != req->seq || peer != req->peer)
+ struct ubus_notify_request *nreq;
+ nreq = container_of(req, struct ubus_notify_request, req);
+
+ if (seq != req->seq)
+ continue;
+
+ if (req->notify) {
+ if (!nreq->pending)
+ continue;
+
+ *id = ubus_find_notify_id(nreq, peer);
+ if (*id < 0)
+ continue;
+ } else if (peer != req->peer)
continue;
return req;
return NULL;
}
-void __hidden ubus_process_req_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+static void ubus_process_notify_status(struct ubus_request *req, int id, struct ubus_msghdr_buf *buf)
{
+ struct ubus_notify_request *nreq;
+ struct blob_attr **tb;
+ struct blob_attr *cur;
+ int rem, idx = 1;
+ int ret = 0;
+
+ nreq = container_of(req, struct ubus_notify_request, req);
+ nreq->pending &= ~(1 << id);
+
+ if (!id) {
+ /* first id: ubusd's status message with a list of ids */
+ tb = ubus_parse_msg(buf->data);
+ if (tb[UBUS_ATTR_SUBSCRIBERS]) {
+ blob_for_each_attr(cur, tb[UBUS_ATTR_SUBSCRIBERS], rem) {
+ if (!blob_check_type(blob_data(cur), blob_len(cur), BLOB_ATTR_INT32))
+ continue;
+
+ nreq->pending |= (1 << idx);
+ nreq->id[idx] = blob_get_int32(cur);
+ idx++;
+
+ if (idx == UBUS_MAX_NOTIFY_PEERS + 1)
+ break;
+ }
+ }
+ } else {
+ ubus_get_status(buf, &ret);
+ if (nreq->status_cb)
+ nreq->status_cb(nreq, id, ret);
+ }
+
+ if (!nreq->pending)
+ ubus_set_req_status(req, 0);
+}
+
+void __hidden ubus_process_req_msg(struct ubus_context *ctx, struct ubus_msghdr_buf *buf, int fd)
+{
+ struct ubus_msghdr *hdr = &buf->hdr;
struct ubus_request *req;
+ int id = -1;
switch(hdr->type) {
case UBUS_MSG_STATUS:
- req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+ req = ubus_find_request(ctx, hdr->seq, hdr->peer, &id);
if (!req)
break;
- ubus_process_req_status(req, hdr);
+ if (fd >= 0) {
+ if (req->fd_cb)
+ req->fd_cb(req, fd);
+ else
+ close(fd);
+ }
+
+ if (id >= 0)
+ ubus_process_notify_status(req, id, buf);
+ else
+ ubus_process_req_status(req, buf);
break;
case UBUS_MSG_DATA:
- req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+ req = ubus_find_request(ctx, hdr->seq, hdr->peer, &id);
if (req && (req->data_cb || req->raw_data_cb))
- ubus_process_req_data(req, hdr);
+ ubus_process_req_data(req, buf);
break;
}
}
+
+int __ubus_monitor(struct ubus_context *ctx, const char *type)
+{
+ blob_buf_init(&b, 0);
+ return ubus_invoke(ctx, UBUS_SYSTEM_OBJECT_MONITOR, type, b.head, NULL, NULL, 1000);
+}
projects / project / ubus.git / blobdiff