1 /* 2 * rpcd - UBUS RPC server 3 * 4 * Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org> 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef __RPC_EXEC_H 20 #define __RPC_EXEC_H 21 22 #include <libubus.h> 23 #include <libubox/blobmsg.h> 24 #include <libubox/ustream.h> 25 26 #define RPC_EXEC_MAX_SIZE (4096 * 64) 27 #define RPC_EXEC_DEFAULT_TIMEOUT (120 * 1000) 28 29 #define ustream_for_each_read_buffer(stream, ptr, len) \ 30 for (ptr = ustream_get_read_buf(stream, &len); \ 31 ptr != NULL && len > 0; \ 32 ustream_consume(stream, len), ptr = ustream_get_read_buf(stream, &len)) 33 34 #define ustream_declare_read(us, fd, name) \ 35 do { \ 36 us.stream.string_data = true; \ 37 us.stream.r.buffer_len = 4096; \ 38 us.stream.r.max_buffers = RPC_EXEC_MAX_SIZE / 4096; \ 39 us.stream.notify_read = rpc_exec_##name##_read_cb; \ 40 us.stream.notify_state = rpc_exec_##name##_state_cb; \ 41 ustream_fd_init(&us, fd); \ 42 } while(0) 43 44 #define ustream_declare_write(us, fd, name) \ 45 do { \ 46 us.stream.string_data = true; \ 47 us.stream.w.buffer_len = 4096; \ 48 us.stream.w.max_buffers = RPC_EXEC_MAX_SIZE / 4096; \ 49 us.stream.notify_write = rpc_exec_##name##_write_cb; \ 50 ustream_fd_init(&us, fd); \ 51 } while(0) 52 53 extern int rpc_exec_timeout; 54 55 typedef int (*rpc_exec_write_cb_t)(struct ustream *, void *); 56 typedef int (*rpc_exec_read_cb_t)(struct blob_buf *, char *, int, void *); 57 typedef int (*rpc_exec_done_cb_t)(struct blob_buf *, int, void *); 58 59 struct rpc_exec_context { 60 struct ubus_context *context; 61 struct ubus_request_data request; 62 struct uloop_timeout timeout; 63 struct uloop_process process; 64 struct ustream_fd ipipe; 65 struct ustream_fd opipe; 66 struct ustream_fd epipe; 67 int outlen; 68 char *out; 69 int errlen; 70 char *err; 71 int stat; 72 void *priv; 73 bool blob_array; 74 void *blob_cookie; 75 struct blob_buf blob; 76 rpc_exec_write_cb_t stdin_cb; 77 rpc_exec_read_cb_t stdout_cb; 78 rpc_exec_read_cb_t stderr_cb; 79 rpc_exec_done_cb_t finish_cb; 80 }; 81 82 const char *rpc_exec_lookup(const char *cmd); 83 84 int rpc_exec(const char **args, rpc_exec_write_cb_t in, 85 rpc_exec_read_cb_t out, rpc_exec_read_cb_t err, 86 rpc_exec_done_cb_t end, void *priv, struct ubus_context *ctx, 87 struct ubus_request_data *req); 88 89 #endif 90
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