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-rw-r--r--nhrpd/nhrp_main.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/nhrpd/nhrp_main.c b/nhrpd/nhrp_main.c
new file mode 100644
index 0000000..bece89c
--- /dev/null
+++ b/nhrpd/nhrp_main.c
@@ -0,0 +1,172 @@
+/* NHRP daemon main functions
+ * Copyright (c) 2014-2015 Timo Teräs
+ *
+ * This file is free software: you may copy, redistribute and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <unistd.h>
+
+#include "zebra.h"
+#include "privs.h"
+#include "getopt.h"
+#include "thread.h"
+#include "sigevent.h"
+#include "lib/version.h"
+#include "log.h"
+#include "memory.h"
+#include "command.h"
+#include "libfrr.h"
+#include "filter.h"
+
+#include "nhrpd.h"
+#include "nhrp_errors.h"
+
+DEFINE_MGROUP(NHRPD, "NHRP");
+
+unsigned int debug_flags = 0;
+
+struct thread_master *master;
+struct timeval current_time;
+
+/* nhrpd options. */
+struct option longopts[] = {{0}};
+
+/* nhrpd privileges */
+static zebra_capabilities_t _caps_p[] = {
+ ZCAP_NET_RAW, ZCAP_NET_ADMIN,
+ ZCAP_DAC_OVERRIDE, /* for now needed to write to
+ /proc/sys/net/ipv4/<if>/send_redirect */
+};
+
+struct zebra_privs_t nhrpd_privs = {
+#if defined(FRR_USER) && defined(FRR_GROUP)
+ .user = FRR_USER,
+ .group = FRR_GROUP,
+#endif
+#ifdef VTY_GROUP
+ .vty_group = VTY_GROUP,
+#endif
+ .caps_p = _caps_p,
+ .cap_num_p = array_size(_caps_p),
+ .cap_num_i = 0
+};
+
+
+static void parse_arguments(int argc, char **argv)
+{
+ int opt;
+
+ while (1) {
+ opt = frr_getopt(argc, argv, 0);
+ if (opt < 0)
+ break;
+
+ switch (opt) {
+ case 0:
+ break;
+ default:
+ frr_help_exit(1);
+ }
+ }
+}
+
+static void nhrp_sigusr1(void)
+{
+ zlog_rotate();
+}
+
+static void nhrp_request_stop(void)
+{
+ debugf(NHRP_DEBUG_COMMON, "Exiting...");
+ frr_early_fini();
+
+ nhrp_shortcut_terminate();
+ nhrp_nhs_terminate();
+ nhrp_zebra_terminate();
+ vici_terminate();
+ evmgr_terminate();
+ nhrp_vc_terminate();
+ vrf_terminate();
+
+ debugf(NHRP_DEBUG_COMMON, "Done.");
+ frr_fini();
+
+ exit(0);
+}
+
+static struct frr_signal_t sighandlers[] = {
+ {
+ .signal = SIGUSR1,
+ .handler = &nhrp_sigusr1,
+ },
+ {
+ .signal = SIGINT,
+ .handler = &nhrp_request_stop,
+ },
+ {
+ .signal = SIGTERM,
+ .handler = &nhrp_request_stop,
+ },
+};
+
+static const struct frr_yang_module_info *const nhrpd_yang_modules[] = {
+ &frr_filter_info,
+ &frr_interface_info,
+ &frr_vrf_info,
+};
+
+FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT,
+
+ .proghelp = "Implementation of the NHRP routing protocol.",
+
+ .signals = sighandlers, .n_signals = array_size(sighandlers),
+
+ .privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules,
+ .n_yang_modules = array_size(nhrpd_yang_modules),
+);
+
+int main(int argc, char **argv)
+{
+ frr_preinit(&nhrpd_di, argc, argv);
+ frr_opt_add("", longopts, "");
+
+ parse_arguments(argc, argv);
+
+ /* Library inits. */
+ master = frr_init();
+ nhrp_error_init();
+ vrf_init(NULL, NULL, NULL, NULL);
+ nhrp_interface_init();
+ resolver_init(master);
+
+ /*
+ * Run with elevated capabilities, as for all netlink activity
+ * we need privileges anyway.
+ * The assert is for clang SA code where it does
+ * not see the change function being set in lib
+ */
+ assert(nhrpd_privs.change);
+ nhrpd_privs.change(ZPRIVS_RAISE);
+
+ evmgr_init();
+ nhrp_vc_init();
+ nhrp_packet_init();
+ vici_init();
+ if_zapi_callbacks(nhrp_ifp_create, nhrp_ifp_up,
+ nhrp_ifp_down, nhrp_ifp_destroy);
+ nhrp_zebra_init();
+ nhrp_shortcut_init();
+
+ nhrp_config_init();
+
+ frr_config_fork();
+ frr_run(master);
+ return 0;
+}