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/*
* rpcd - UBUS RPC server
*
* Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __RPC_EXEC_H
#define __RPC_EXEC_H
#include <libubus.h>
#include <libubox/blobmsg.h>
#include <libubox/ustream.h>
#define RPC_EXEC_MAX_SIZE (4096 * 64)
#define RPC_EXEC_MAX_RUNTIME (30 * 1000)
#define ustream_for_each_read_buffer(stream, ptr, len) \
for (ptr = ustream_get_read_buf(stream, &len); \
ptr != NULL && len > 0; \
ustream_consume(stream, len), ptr = ustream_get_read_buf(stream, &len))
#define ustream_declare_read(us, fd, name) \
do { \
us.stream.string_data = true; \
us.stream.r.buffer_len = 4096; \
us.stream.r.max_buffers = RPC_EXEC_MAX_SIZE / 4096; \
us.stream.notify_read = rpc_exec_##name##_read_cb; \
us.stream.notify_state = rpc_exec_##name##_state_cb; \
ustream_fd_init(&us, fd); \
} while(0)
#define ustream_declare_write(us, fd, name) \
do { \
us.stream.string_data = true; \
us.stream.w.buffer_len = 4096; \
us.stream.w.max_buffers = RPC_EXEC_MAX_SIZE / 4096; \
us.stream.notify_write = rpc_exec_##name##_write_cb; \
ustream_fd_init(&us, fd); \
} while(0)
typedef int (*rpc_exec_write_cb_t)(struct ustream *, void *);
typedef int (*rpc_exec_read_cb_t)(struct blob_buf *, char *, int, void *);
typedef int (*rpc_exec_done_cb_t)(struct blob_buf *, int, void *);
struct rpc_exec_context {
struct ubus_context *context;
struct ubus_request_data request;
struct uloop_timeout timeout;
struct uloop_process process;
struct ustream_fd ipipe;
struct ustream_fd opipe;
struct ustream_fd epipe;
int outlen;
char *out;
int errlen;
char *err;
int stat;
void *priv;
bool blob_array;
void *blob_cookie;
struct blob_buf blob;
rpc_exec_write_cb_t stdin_cb;
rpc_exec_read_cb_t stdout_cb;
rpc_exec_read_cb_t stderr_cb;
rpc_exec_done_cb_t finish_cb;
};
const char *rpc_exec_lookup(const char *cmd);
int rpc_exec(const char **args, rpc_exec_write_cb_t in,
rpc_exec_read_cb_t out, rpc_exec_read_cb_t err,
rpc_exec_done_cb_t end, void *priv, struct ubus_context *ctx,
struct ubus_request_data *req);
#endif
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