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/*
* rpcd - UBUS RPC server
*
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
* 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.
*/
#include <unistd.h>
#include <stdlib.h>
#include <libubox/blobmsg_json.h>
#include <libubus.h>
#include <signal.h>
#include <sys/stat.h>
#include <rpcd/session.h>
#include <rpcd/uci.h>
#include <rpcd/plugin.h>
#include <rpcd/exec.h>
static struct ubus_context *ctx;
static bool respawn = false;
int rpc_exec_timeout = RPC_EXEC_DEFAULT_TIMEOUT;
static void
handle_signal(int sig)
{
rpc_session_freeze();
uloop_cancelled = true;
respawn = (sig == SIGHUP);
}
static void
exec_self(int argc, char **argv)
{
int i;
const char *cmd = rpc_exec_lookup(argv[0]);
char **args = calloc(argc + 1, sizeof(char *));
if (!cmd || !args)
return;
for (i = 0; i < argc; i++)
args[i] = argv[i];
setenv("RPC_HANGUP", "1", 1);
execv(cmd, (char * const *)args);
}
int main(int argc, char **argv)
{
struct stat s;
const char *hangup;
const char *ubus_socket = NULL;
int ch;
while ((ch = getopt(argc, argv, "s:t:")) != -1) {
switch (ch) {
case 's':
ubus_socket = optarg;
break;
case 't':
rpc_exec_timeout = 1000 * strtol(optarg, NULL, 0);
break;
default:
break;
}
}
if (rpc_exec_timeout < 1000 || rpc_exec_timeout > 600000) {
fprintf(stderr, "Invalid execution timeout specified\n");
return -1;
}
if (stat(RPC_UCI_DIR_PREFIX, &s))
mkdir(RPC_UCI_DIR_PREFIX, 0700);
umask(0077);
signal(SIGPIPE, SIG_IGN);
signal(SIGHUP, handle_signal);
signal(SIGUSR1, handle_signal);
uloop_init();
ctx = ubus_connect(ubus_socket);
if (!ctx) {
fprintf(stderr, "Failed to connect to ubus\n");
return -1;
}
ubus_add_uloop(ctx);
rpc_session_api_init(ctx);
rpc_uci_api_init(ctx);
rpc_plugin_api_init(ctx);
hangup = getenv("RPC_HANGUP");
if (!hangup || strcmp(hangup, "1"))
rpc_uci_purge_savedirs();
else
rpc_session_thaw();
uloop_run();
ubus_free(ctx);
uloop_done();
if (respawn)
exec_self(argc, argv);
return 0;
}
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