113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* rpcd - UBUS RPC server
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*
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* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <unistd.h>
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#include <libubox/blobmsg_json.h>
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#include <libubus.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <rpcd/session.h>
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#include <rpcd/uci.h>
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#include <rpcd/plugin.h>
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#include <rpcd/exec.h>
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static struct ubus_context *ctx;
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static bool respawn = false;
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static void
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handle_signal(int sig)
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{
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rpc_session_freeze();
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uloop_cancelled = true;
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respawn = (sig == SIGHUP);
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}
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static void
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exec_self(int argc, char **argv)
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{
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int i;
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const char *cmd = rpc_exec_lookup(argv[0]);
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char **args = calloc(argc + 1, sizeof(char *));
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if (!cmd || !args)
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return;
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for (i = 0; i < argc; i++)
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args[i] = argv[i];
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setenv("RPC_HANGUP", "1", 1);
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execv(cmd, (char * const *)args);
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}
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int main(int argc, char **argv)
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{
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struct stat s;
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const char *hangup;
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const char *ubus_socket = NULL;
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int ch;
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while ((ch = getopt(argc, argv, "s:")) != -1) {
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switch (ch) {
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case 's':
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ubus_socket = optarg;
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break;
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default:
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break;
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}
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}
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if (stat("/var/run/rpcd", &s))
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mkdir("/var/run/rpcd", 0700);
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signal(SIGPIPE, SIG_IGN);
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signal(SIGHUP, handle_signal);
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signal(SIGUSR1, handle_signal);
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uloop_init();
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ctx = ubus_connect(ubus_socket);
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if (!ctx) {
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fprintf(stderr, "Failed to connect to ubus\n");
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return -1;
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}
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ubus_add_uloop(ctx);
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rpc_session_api_init(ctx);
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rpc_uci_api_init(ctx);
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rpc_plugin_api_init(ctx);
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hangup = getenv("RPC_HANGUP");
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if (!hangup || strcmp(hangup, "1"))
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rpc_uci_purge_savedirs();
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else
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rpc_session_thaw();
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uloop_run();
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ubus_free(ctx);
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uloop_done();
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if (respawn)
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exec_self(argc, argv);
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return 0;
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}
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