From 2c7cac91ed6e7db0f6937923d2b57f97dbdbc337 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:53:30 +0200 Subject: Adding upstream version 8.4.4. Signed-off-by: Daniel Baumann --- nhrpd/nhrp_main.c | 172 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 nhrpd/nhrp_main.c (limited to 'nhrpd/nhrp_main.c') 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 + +#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//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; +} -- cgit v1.2.3