155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
#include <libubox/avl.h>
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#include <libubox/list.h>
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#include <libubox/blobmsg.h>
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#include <libubox/uloop.h>
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#include <stdint.h>
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#include "ubusmsg.h"
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#include "ubus_common.h"
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struct ubus_msg_src;
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struct ubus_object;
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struct ubus_request;
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struct ubus_request_data;
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typedef int (*ubus_handler_t)(struct ubus_object *obj,
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struct ubus_request_data *req,
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const char *method, struct blob_attr *msg);
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typedef void (*ubus_data_handler_t)(struct ubus_request *req,
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int type, struct blob_attr *msg);
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typedef void (*ubus_complete_handler_t)(struct ubus_request *req, int ret);
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#define UBUS_SIGNATURE(_type, _name) { .type = _type, .name = _name }
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#define UBUS_METHOD_START(_name) UBUS_SIGNATURE(UBUS_SIGNATURE_METHOD, _name)
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#define UBUS_METHOD_END() UBUS_SIGNATURE(UBUS_SIGNATURE_END, NULL)
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#define UBUS_FIELD(_type, _name) UBUS_SIGNATURE(BLOBMSG_TYPE_ ## _type, _name)
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#define UBUS_ARRAY(_name) UBUS_FIELD(ARRAY, _name)
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#define UBUS_ARRAY_END() UBUS_SIGNATURE(UBUS_SIGNATURE_END, NULL)
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#define UBUS_TABLE_START(_name) UBUS_FIELD(TABLE, _name)
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#define UBUS_TABLE_END() UBUS_SIGNATURE(UBUS_SIGNATURE_END, NULL)
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#define UBUS_OBJECT_TYPE(_name, _signature) \
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{ \
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.name = _name, \
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.id = 0, \
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.n_signature = ARRAY_SIZE(_signature), \
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.signature = _signature \
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}
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struct ubus_signature {
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enum blobmsg_type type;
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const char *name;
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};
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struct ubus_object_type {
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const char *name;
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uint32_t id;
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int n_signature;
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const struct ubus_signature *signature;
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};
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struct ubus_method {
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const char *name;
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ubus_handler_t handler;
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};
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struct ubus_object {
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struct avl_node avl;
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const char *name;
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uint32_t id;
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const char *path;
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struct ubus_object_type *type;
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const struct ubus_method *methods;
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int n_methods;
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};
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struct ubus_context {
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struct list_head requests;
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struct avl_tree objects;
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struct uloop_fd sock;
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uint32_t local_id;
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uint32_t request_seq;
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void (*connection_lost)(struct ubus_context *ctx);
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struct {
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struct ubus_msghdr hdr;
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char data[UBUS_MAX_MSGLEN - sizeof(struct ubus_msghdr)];
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} msgbuf;
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};
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struct ubus_request_data {
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uint32_t object;
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uint32_t peer;
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uint32_t seq;
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};
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struct ubus_request {
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struct list_head list;
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struct list_head pending;
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bool status_msg;
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int status_code;
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bool blocked;
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bool cancelled;
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uint32_t peer;
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uint32_t seq;
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ubus_data_handler_t data_cb;
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ubus_complete_handler_t complete_cb;
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struct ubus_context *ctx;
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void *priv;
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};
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#define BLOBMSG_END_TABLE BLOBMSG_TYPE_UNSPEC
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struct ubus_context *ubus_connect(const char *path);
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void ubus_free(struct ubus_context *ctx);
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const char *ubus_strerror(int error);
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/* ----------- helpers for message handling ----------- */
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struct blob_attr **ubus_parse_msg(struct blob_attr *msg);
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/* ----------- raw request handling ----------- */
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/* start a raw request */
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int ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
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struct blob_attr *msg, int cmd, uint32_t peer);
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/* wait for a request to complete and return its status */
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int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req);
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/* complete a request asynchronously */
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void ubus_complete_request_async(struct ubus_context *ctx,
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struct ubus_request *req);
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/* abort an asynchronous request */
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void ubus_abort_request(struct ubus_context *ctx, struct ubus_request *req);
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/* ----------- rpc ----------- */
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/* invoke a method on a specific object */
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int ubus_invoke(struct ubus_context *ctx, uint32_t obj, const char *method,
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struct blob_attr *msg, ubus_data_handler_t cb, void *priv);
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/* asynchronous version of ubus_invoke() */
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void ubus_invoke_async(struct ubus_context *ctx, uint32_t obj, const char *method,
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struct blob_attr *msg, struct ubus_request *req);
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/* make an object visible to remote connections */
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int ubus_publish(struct ubus_context *ctx, struct ubus_object *obj);
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