| /* Test implementation for osmo_tdef VTY configuration API. */ |
| /* |
| * (C) 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * |
| * All Rights Reserved |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| * |
| * Author: Neels Hofmeyr <nhofmeyr@sysmocom.de> |
| * |
| * This program is free software; you can redistribute it 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #define _GNU_SOURCE |
| #include <getopt.h> |
| #include <signal.h> |
| #include <limits.h> |
| #include <string.h> |
| |
| #include <osmocom/core/application.h> |
| |
| #include <osmocom/vty/command.h> |
| #include <osmocom/vty/misc.h> |
| #include <osmocom/vty/telnet_interface.h> |
| |
| #include <osmocom/core/tdef.h> |
| #include <osmocom/vty/tdef_vty.h> |
| |
| #include <stdlib.h> |
| |
| #include "config.h" |
| |
| void *root_ctx = NULL; |
| |
| /* ------------------- HERE IS THE INTERESTING TDEF RELEVANT PART ------------------- */ |
| |
| /* This example keeps a separate list of timers for each instance of a dynamically allocated instance of a VTY node, |
| * for example of keeping separate timers for each BTS in a BSC. |
| */ |
| |
| static const struct osmo_tdef bts_default_tdefs[] = { |
| { .T=1111, .default_val=2, .desc="Dynamic Duo" }, |
| { .T=2222, .default_val=1, .desc="BATMAN" }, |
| { .T=3333, .default_val=12, .desc="Dadadadadadadadadadadada" }, |
| { .T=4444, .default_val=500, .unit=OSMO_TDEF_MS, .desc="POW!" }, |
| {} |
| }; |
| |
| |
| /* Boilerplate dynamic VTY node ... */ |
| |
| enum tdef_vty_test_nodes { |
| MEMBER_NODE = _LAST_OSMOVTY_NODE + 1, |
| }; |
| |
| static struct cmd_node member_node = { |
| MEMBER_NODE, |
| "%s(config-member)# ", |
| 1, |
| }; |
| |
| struct member { |
| struct llist_head entry; |
| char name[23]; |
| struct osmo_tdef *tdefs; |
| }; |
| |
| LLIST_HEAD(all_members); |
| |
| struct member *member_alloc(const char *name) |
| { |
| struct member *m = talloc_zero(root_ctx, struct member); |
| osmo_strlcpy(m->name, name, sizeof(m->name)); |
| |
| /* DYNAMIC TDEF COPIES */ |
| m->tdefs = (struct osmo_tdef*)talloc_size(m, sizeof(bts_default_tdefs)); |
| memcpy((char*)m->tdefs, (char*)&bts_default_tdefs, sizeof(bts_default_tdefs)); |
| osmo_tdefs_reset(m->tdefs); |
| |
| llist_add_tail(&m->entry, &all_members); |
| return m; |
| } |
| |
| struct member *member_find(const char *name) |
| { |
| struct member *m; |
| llist_for_each_entry(m, &all_members, entry) { |
| if (!strcmp(m->name, name)) |
| return m; |
| } |
| return NULL; |
| } |
| |
| DEFUN(cfg_member, cfg_member_cmd, |
| "member NAME", |
| "Enter member node\n" "Existing or new member node name\n") |
| { |
| const char *name = argv[0]; |
| struct member *m = member_find(name); |
| if (!m) |
| m = member_alloc(name); |
| vty->index = m; |
| vty->node = MEMBER_NODE; |
| return CMD_SUCCESS; |
| } |
| |
| |
| /* TDEF SPECIFIC VTY */ |
| |
| static bool startswith(const char *str, const char *startswith_str) |
| { |
| if (!startswith_str) |
| return true; |
| if (!str) |
| return false; |
| return strncmp(str, startswith_str, strlen(startswith_str)) == 0; |
| } |
| |
| DEFUN(show_timer, show_member_timer_cmd, |
| "show member-timer [NAME] " OSMO_TDEF_VTY_ARG_T_OPTIONAL, |
| SHOW_STR "Show timers for a specific member" "member name\n" |
| OSMO_TDEF_VTY_DOC_T) |
| { |
| const char *name = argc > 0 ? argv[0] : NULL; |
| struct member *m; |
| const char *T_arg = argc > 1 ? argv[1] : NULL; |
| int shown = 0; |
| |
| llist_for_each_entry(m, &all_members, entry) { |
| if (!name || startswith(m->name, name)) { |
| osmo_tdef_vty_show_cmd(vty, m->tdefs, T_arg, "%11s: ", m->name); |
| shown ++; |
| } |
| } |
| if (!shown) { |
| vty_out(vty, "%% No such member: %s%s", name ? : "(none)", VTY_NEWLINE); |
| return CMD_WARNING; |
| } |
| return CMD_SUCCESS; |
| } |
| |
| DEFUN(cfg_member_timer, cfg_member_timer_cmd, |
| "timer " OSMO_TDEF_VTY_ARG_SET_OPTIONAL, |
| "Configure or show timers for this member\n" |
| OSMO_TDEF_VTY_DOC_SET) |
| { |
| struct member *m = vty->index; |
| |
| if (!m || !m->tdefs) { |
| vty_out(vty, "%% No timers here%s", VTY_NEWLINE); |
| return CMD_WARNING; |
| } |
| |
| /* If any arguments are missing, redirect to 'show' */ |
| if (argc < 2) { |
| const char *T_arg = argc > 0 ? argv[0] : NULL; |
| return osmo_tdef_vty_show_cmd(vty, m->tdefs, T_arg, "%11s: ", m->name); |
| } |
| |
| return osmo_tdef_vty_set_cmd(vty, m->tdefs, argv); |
| } |
| |
| static int config_write_member(struct vty *vty) |
| { |
| struct member *m; |
| llist_for_each_entry(m, &all_members, entry) { |
| vty_out(vty, "member %s%s", m->name, VTY_NEWLINE); |
| osmo_tdef_vty_write(vty, m->tdefs, " timer "); |
| } |
| |
| return CMD_SUCCESS; |
| } |
| |
| static void member_init_vty() |
| { |
| install_node(&member_node, config_write_member); |
| install_element(CONFIG_NODE, &cfg_member_cmd); |
| |
| install_element_ve(&show_member_timer_cmd); |
| install_element(MEMBER_NODE, &cfg_member_timer_cmd); |
| } |
| |
| /* ------------------- THE REST is just boilerplate osmo main() ------------------- */ |
| |
| static void print_help() |
| { |
| printf( "options:\n" |
| " -h --help this text\n" |
| " -d --debug MASK Enable debugging (e.g. -d DRSL:DOML:DLAPDM)\n" |
| " -D --daemonize For the process into a background daemon\n" |
| " -c --config-file Specify the filename of the config file\n" |
| " -s --disable-color Don't use colors in stderr log output\n" |
| " -T --timestamp Prefix every log line with a timestamp\n" |
| " -V --version Print version information and exit\n" |
| " -e --log-level Set a global log-level\n" |
| ); |
| } |
| |
| static struct { |
| const char *config_file; |
| int daemonize; |
| } cmdline_config = {}; |
| |
| static void handle_options(int argc, char **argv) |
| { |
| while (1) { |
| int option_idx = 0, c; |
| static const struct option long_options[] = { |
| { "help", 0, 0, 'h' }, |
| { "debug", 1, 0, 'd' }, |
| { "daemonize", 0, 0, 'D' }, |
| { "config-file", 1, 0, 'c' }, |
| { "disable-color", 0, 0, 's' }, |
| { "timestamp", 0, 0, 'T' }, |
| { "version", 0, 0, 'V' }, |
| { "log-level", 1, 0, 'e' }, |
| {} |
| }; |
| |
| c = getopt_long(argc, argv, "hc:d:Dc:sTVe:", |
| long_options, &option_idx); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 'h': |
| print_help(); |
| exit(0); |
| case 's': |
| log_set_use_color(osmo_stderr_target, 0); |
| break; |
| case 'd': |
| log_parse_category_mask(osmo_stderr_target, optarg); |
| break; |
| case 'D': |
| cmdline_config.daemonize = 1; |
| break; |
| case 'c': |
| cmdline_config.config_file = optarg; |
| break; |
| case 'T': |
| log_set_print_timestamp(osmo_stderr_target, 1); |
| break; |
| case 'e': |
| log_set_log_level(osmo_stderr_target, atoi(optarg)); |
| break; |
| case 'V': |
| print_version(1); |
| exit(0); |
| break; |
| default: |
| /* catch unknown options *as well as* missing arguments. */ |
| fprintf(stderr, "Error in command line options. Exiting.\n"); |
| exit(-1); |
| } |
| } |
| } |
| |
| static int quit = 0; |
| |
| static void signal_handler(int signal) |
| { |
| fprintf(stdout, "signal %u received\n", signal); |
| |
| switch (signal) { |
| case SIGINT: |
| case SIGTERM: |
| quit++; |
| break; |
| case SIGABRT: |
| osmo_generate_backtrace(); |
| /* in case of abort, we want to obtain a talloc report |
| * and then return to the caller, who will abort the process */ |
| case SIGUSR1: |
| talloc_report(tall_vty_ctx, stderr); |
| talloc_report_full(root_ctx, stderr); |
| break; |
| case SIGUSR2: |
| talloc_report_full(tall_vty_ctx, stderr); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static struct vty_app_info vty_info = { |
| .name = "tdef_vty_test", |
| .version = PACKAGE_VERSION, |
| }; |
| |
| static const struct log_info_cat default_categories[] = {}; |
| |
| const struct log_info log_info = { |
| .cat = default_categories, |
| .num_cat = ARRAY_SIZE(default_categories), |
| }; |
| |
| int main(int argc, char **argv) |
| { |
| int rc; |
| |
| root_ctx = talloc_named_const(NULL, 0, "tdef_vty_test"); |
| |
| osmo_init_logging2(root_ctx, &log_info); |
| |
| vty_info.tall_ctx = root_ctx; |
| vty_init(&vty_info); |
| osmo_talloc_vty_add_cmds(); |
| |
| member_init_vty(); /* <--- relevant init for this example */ |
| |
| handle_options(argc, argv); |
| |
| if (cmdline_config.config_file) { |
| rc = vty_read_config_file(cmdline_config.config_file, NULL); |
| if (rc < 0) { |
| fprintf(stderr, "Failed to parse the config file: '%s'\n", cmdline_config.config_file); |
| return 1; |
| } |
| } |
| |
| rc = telnet_init_dynif(root_ctx, NULL, vty_get_bind_addr(), 42042); |
| if (rc < 0) |
| return 2; |
| |
| signal(SIGINT, &signal_handler); |
| signal(SIGTERM, &signal_handler); |
| signal(SIGABRT, &signal_handler); |
| signal(SIGUSR1, &signal_handler); |
| signal(SIGUSR2, &signal_handler); |
| osmo_init_ignore_signals(); |
| |
| if (cmdline_config.daemonize) { |
| rc = osmo_daemonize(); |
| if (rc < 0) { |
| perror("Error during daemonize"); |
| return 6; |
| } |
| } |
| |
| while (!quit) { |
| log_reset_context(); |
| osmo_select_main(0); |
| } |
| |
| talloc_free(root_ctx); |
| talloc_free(tall_vty_ctx); |
| |
| return 0; |
| } |