file.h

   1 /*
   2  * luci-rpcd - LuCI UBUS RPC server
   3  *
   4  *   Copyright (C) 2013 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_FILE_H
  20 #define __RPC_FILE_H
  21
  22 #include <fcntl.h>
  23 #include <errno.h>
  24 #include <unistd.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <limits.h>
  28 #include <dirent.h>
  29 #include <sys/stat.h>
  30 #include <sys/wait.h>
  31 #include <libubus.h>
  32 #include <libubox/blobmsg.h>
  33 #include <libubox/ustream.h>
  34
  35 /* limit of sys & proc files */
  36 #define RPC_FILE_MIN_SIZE               (128)
  37
  38 /* limit of regular files and command output data */
  39 #define RPC_FILE_MAX_SIZE               (4096 * 64)
  40 #define RPC_FILE_MAX_RUNTIME    (3 * 1000)
  41
  42 #define ustream_for_each_read_buffer(stream, ptr, len) \
  43         for (ptr = ustream_get_read_buf(stream, &len);     \
  44              ptr != NULL && len > 0;                       \
  45              ustream_consume(stream, len), ptr = ustream_get_read_buf(stream, &len))
  46
  47 #define ustream_declare(us, fd, name)                     \
  48         us.stream.string_data   = true;                       \
  49         us.stream.r.buffer_len  = 4096;                       \
  50         us.stream.r.max_buffers = RPC_FILE_MAX_SIZE / 4096;   \
  51         us.stream.notify_read   = rpc_file_##name##_read_cb;  \
  52         us.stream.notify_state  = rpc_file_##name##_state_cb; \
  53         ustream_fd_init(&us, fd);
  54
  55 struct rpc_file_exec_context {
  56         struct ubus_context *context;
  57         struct ubus_request_data request;
  58         struct uloop_timeout timeout;
  59         struct uloop_process process;
  60         struct ustream_fd opipe;
  61         struct ustream_fd epipe;
  62         int outlen;
  63         char *out;
  64         int errlen;
  65         char *err;
  66         int stat;
  67 };
  68
  69 #endif