--- /dev/null
+/*
+ * Copyright (C) 2011-2012 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
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "libubus.h"
+#include "libubus-internal.h"
+
+struct ubus_pending_data {
+ struct list_head list;
+ int type;
+ struct blob_attr data[];
+};
+
+static void req_data_cb(struct ubus_request *req, int type, struct blob_attr *data)
+{
+ struct blob_attr **attr;
+
+ if (req->raw_data_cb)
+ req->raw_data_cb(req, type, data);
+
+ if (!req->data_cb)
+ return;
+
+ attr = ubus_parse_msg(data);
+ req->data_cb(req, type, attr[UBUS_ATTR_DATA]);
+}
+
+static void __ubus_process_req_data(struct ubus_request *req)
+{
+ struct ubus_pending_data *data;
+
+ while (!list_empty(&req->pending)) {
+ data = list_first_entry(&req->pending,
+ struct ubus_pending_data, list);
+ list_del(&data->list);
+ if (!req->cancelled)
+ req_data_cb(req, data->type, data->data);
+ free(data);
+ }
+}
+
+void ubus_abort_request(struct ubus_context *ctx, struct ubus_request *req)
+{
+ if (!list_empty(&req->list))
+ return;
+
+ req->cancelled = true;
+ __ubus_process_req_data(req);
+ list_del_init(&req->list);
+}
+
+void ubus_complete_request_async(struct ubus_context *ctx, struct ubus_request *req)
+{
+ if (!list_empty(&req->list))
+ return;
+
+ list_add(&req->list, &ctx->requests);
+}
+
+static void ubus_sync_req_cb(struct ubus_request *req, int ret)
+{
+ req->status_msg = true;
+ req->status_code = ret;
+ 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)
+{
+ struct ubus_sync_req_cb *cb;
+
+ cb = container_of(timeout, struct ubus_sync_req_cb, timeout);
+ ubus_sync_req_cb(cb->req, UBUS_STATUS_TIMEOUT);
+}
+
+int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req,
+ int 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;
+
+ 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);
+ }
+
+ 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();
+ uloop_cancelled = cancelled;
+ }
+ ctx->stack_depth--;
+
+ if (timeout)
+ uloop_timeout_cancel(&cb.timeout);
+
+ if (req->status_msg)
+ status = req->status_code;
+
+ req->complete_cb = complete_cb;
+ if (req->complete_cb)
+ req->complete_cb(req, status);
+
+ if (!registered)
+ uloop_fd_delete(&ctx->sock);
+
+ if (!ctx->stack_depth)
+ ubus_process_pending_msg(ctx);
+
+ return status;
+}
+
+void ubus_complete_deferred_request(struct ubus_context *ctx, struct ubus_request_data *req, int ret)
+{
+ 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);
+}
+
+int ubus_send_reply(struct ubus_context *ctx, struct ubus_request_data *req,
+ struct blob_attr *msg)
+{
+ int ret;
+
+ 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);
+ 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)
+{
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, obj);
+ blob_put_string(&b, UBUS_ATTR_METHOD, method);
+ 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)
+ 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)
+{
+ struct ubus_request req;
+
+ 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)
+{
+ ubus_complete_handler_t cb = req->complete_cb;
+
+ if (!cb)
+ return;
+
+ req->complete_cb = NULL;
+ cb(req, req->status_code);
+}
+
+static bool ubus_get_status(struct ubus_msghdr *hdr, int *ret)
+{
+ struct blob_attr **attrbuf = ubus_parse_msg(hdr->data);
+
+ if (!attrbuf[UBUS_ATTR_STATUS])
+ return false;
+
+ *ret = blob_get_u32(attrbuf[UBUS_ATTR_STATUS]);
+ return true;
+}
+
+static int
+ubus_process_req_status(struct ubus_request *req, struct ubus_msghdr *hdr)
+{
+ 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);
+
+ return ret;
+}
+
+static void
+ubus_process_req_data(struct ubus_request *req, struct ubus_msghdr *hdr)
+{
+ struct ubus_pending_data *data;
+ int len;
+
+ if (!req->blocked) {
+ req->blocked = true;
+ req_data_cb(req, hdr->type, hdr->data);
+ __ubus_process_req_data(req);
+ req->blocked = false;
+
+ if (req->status_msg)
+ ubus_req_complete_cb(req);
+
+ return;
+ }
+
+ len = blob_raw_len(hdr->data);
+ data = calloc(1, sizeof(*data) + len);
+ if (!data)
+ return;
+
+ data->type = hdr->type;
+ memcpy(data->data, hdr->data, len);
+ list_add(&data->list, &req->pending);
+}
+
+static struct ubus_request *
+ubus_find_request(struct ubus_context *ctx, uint32_t seq, uint32_t peer)
+{
+ struct ubus_request *req;
+
+ list_for_each_entry(req, &ctx->requests, list) {
+ if (seq != req->seq || peer != req->peer)
+ continue;
+
+ return req;
+ }
+ return NULL;
+}
+
+void __hidden ubus_process_req_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+{
+ struct ubus_request *req;
+
+ switch(hdr->type) {
+ case UBUS_MSG_STATUS:
+ req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+ if (!req)
+ break;
+
+ ubus_process_req_status(req, hdr);
+ break;
+
+ case UBUS_MSG_DATA:
+ req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+ if (req && (req->data_cb || req->raw_data_cb))
+ ubus_process_req_data(req, hdr);
+ break;
+ }
+}
struct blob_buf b __hidden = {};
-struct ubus_pending_data {
- struct list_head list;
- int type;
- struct blob_attr data[];
-};
-
-struct ubus_pending_invoke {
+struct ubus_pending_msg {
struct list_head list;
struct ubus_msghdr hdr;
};
-static void ubus_process_pending_invoke(struct ubus_context *ctx);
-
static int ubus_cmp_id(const void *k1, const void *k2, void *ptr)
{
const uint32_t *id1 = k1, *id2 = k2;
return err;
}
-static bool ubus_get_status(struct ubus_msghdr *hdr, int *ret)
+static void
+ubus_queue_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
{
- struct blob_attr **attrbuf = ubus_parse_msg(hdr->data);
+ struct ubus_pending_msg *pending;
- if (!attrbuf[UBUS_ATTR_STATUS])
- return false;
-
- *ret = blob_get_u32(attrbuf[UBUS_ATTR_STATUS]);
- return true;
-}
-
-static void req_data_cb(struct ubus_request *req, int type, struct blob_attr *data)
-{
- struct blob_attr **attr;
-
- if (req->raw_data_cb)
- req->raw_data_cb(req, type, data);
-
- if (!req->data_cb)
+ pending = calloc(1, sizeof(*pending) + blob_raw_len(hdr->data));
+ if (!pending)
return;
- attr = ubus_parse_msg(data);
- req->data_cb(req, type, attr[UBUS_ATTR_DATA]);
-}
-
-static void ubus_process_req_data(struct ubus_request *req)
-{
- struct ubus_pending_data *data;
-
- while (!list_empty(&req->pending)) {
- data = list_first_entry(&req->pending,
- struct ubus_pending_data, list);
- list_del(&data->list);
- if (!req->cancelled)
- req_data_cb(req, data->type, data->data);
- free(data);
- }
+ memcpy(&pending->hdr, hdr, sizeof(*hdr) + blob_raw_len(hdr->data));
+ list_add(&pending->list, &ctx->pending);
}
-static void ubus_req_complete_cb(struct ubus_request *req)
+void __hidden
+ubus_process_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
{
- ubus_complete_handler_t cb = req->complete_cb;
-
- if (!cb)
- return;
-
- req->complete_cb = NULL;
- cb(req, req->status_code);
-}
-
-static int ubus_process_req_status(struct ubus_request *req, struct ubus_msghdr *hdr)
-{
- 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);
-
- return ret;
-}
-
-static void ubus_req_data(struct ubus_request *req, struct ubus_msghdr *hdr)
-{
- struct ubus_pending_data *data;
- int len;
-
- if (!req->blocked) {
- req->blocked = true;
- req_data_cb(req, hdr->type, hdr->data);
- ubus_process_req_data(req);
- req->blocked = false;
-
- if (req->status_msg)
- ubus_req_complete_cb(req);
-
- return;
- }
-
- len = blob_raw_len(hdr->data);
- data = calloc(1, sizeof(*data) + len);
- if (!data)
- return;
-
- data->type = hdr->type;
- memcpy(data->data, hdr->data, len);
- list_add(&data->list, &req->pending);
-}
-
-static struct ubus_request *ubus_find_request(struct ubus_context *ctx, uint32_t seq, uint32_t peer)
-{
- struct ubus_request *req;
-
- list_for_each_entry(req, &ctx->requests, list) {
- if (seq != req->seq || peer != req->peer)
- continue;
-
- return req;
- }
- return NULL;
-}
-
-void ubus_complete_deferred_request(struct ubus_context *ctx, struct ubus_request_data *req, int ret)
-{
- 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);
-}
-
-void __hidden ubus_process_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
-{
- struct ubus_pending_invoke *pending;
- struct ubus_request *req;
switch(hdr->type) {
case UBUS_MSG_STATUS:
- req = ubus_find_request(ctx, hdr->seq, hdr->peer);
- if (!req)
- break;
-
- ubus_process_req_status(req, hdr);
- break;
-
case UBUS_MSG_DATA:
- req = ubus_find_request(ctx, hdr->seq, hdr->peer);
- if (req && (req->data_cb || req->raw_data_cb))
- ubus_req_data(req, hdr);
+ ubus_process_req_msg(ctx, hdr);
break;
case UBUS_MSG_INVOKE:
case UBUS_MSG_UNSUBSCRIBE:
case UBUS_MSG_NOTIFY:
if (ctx->stack_depth > 2) {
- pending = calloc(1, sizeof(*pending) +
- blob_raw_len(hdr->data));
-
- if (!pending)
- return;
-
- memcpy(&pending->hdr, hdr, sizeof(*hdr) +
- blob_raw_len(hdr->data));
- list_add(&pending->list, &ctx->pending);
- } else {
- ubus_process_obj_msg(ctx, hdr);
+ ubus_queue_msg(ctx, hdr);
+ break;
}
+
+ ubus_process_obj_msg(ctx, hdr);
break;
}
}
-static void ubus_process_pending_invoke(struct ubus_context *ctx)
+void __hidden ubus_process_pending_msg(struct ubus_context *ctx)
{
- struct ubus_pending_invoke *pending, *tmp;
+ struct ubus_pending_msg *pending, *tmp;
list_for_each_entry_safe(pending, tmp, &ctx->pending, list) {
list_del(&pending->list);
}
}
-void ubus_abort_request(struct ubus_context *ctx, struct ubus_request *req)
-{
- if (!list_empty(&req->list))
- return;
-
- req->cancelled = true;
- ubus_process_req_data(req);
- list_del_init(&req->list);
-}
-
-void ubus_complete_request_async(struct ubus_context *ctx, struct ubus_request *req)
-{
- if (!list_empty(&req->list))
- return;
-
- list_add(&req->list, &ctx->requests);
-}
-
-static void ubus_sync_req_cb(struct ubus_request *req, int ret)
-{
- req->status_msg = true;
- req->status_code = ret;
- 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)
-{
- struct ubus_sync_req_cb *cb;
-
- cb = container_of(timeout, struct ubus_sync_req_cb, timeout);
- ubus_sync_req_cb(cb->req, UBUS_STATUS_TIMEOUT);
-}
-
-int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req,
- int 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;
-
- 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);
- }
-
- 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();
- uloop_cancelled = cancelled;
- }
- ctx->stack_depth--;
-
- if (timeout)
- uloop_timeout_cancel(&cb.timeout);
-
- if (req->status_msg)
- status = req->status_code;
-
- req->complete_cb = complete_cb;
- if (req->complete_cb)
- req->complete_cb(req, status);
-
- if (!registered)
- uloop_fd_delete(&ctx->sock);
-
- if (!ctx->stack_depth)
- ubus_process_pending_invoke(ctx);
-
- return status;
-}
-
struct ubus_lookup_request {
struct ubus_request req;
ubus_lookup_handler_t cb;
return ubus_complete_request(ctx, &req, 0);
}
-int ubus_send_reply(struct ubus_context *ctx, struct ubus_request_data *req,
- struct blob_attr *msg)
-{
- int ret;
-
- 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);
- 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)
-{
- blob_buf_init(&b, 0);
- blob_put_int32(&b, UBUS_ATTR_OBJID, obj);
- blob_put_string(&b, UBUS_ATTR_METHOD, method);
- 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)
- 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)
-{
- struct ubus_request req;
-
- ubus_invoke_async(ctx, obj, method, msg, &req);
- req.data_cb = cb;
- req.priv = priv;
- return ubus_complete_request(ctx, &req, timeout);
-}
-
-
-
static int ubus_event_cb(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req,
const char *method, struct blob_attr *msg)
projects / oweals / ubus.git / commitdiff