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/* Copyright (C) 2023 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
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 3 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <getopt.h>
#include <stdio.h>
#include <unistd.h>
#include "contrib/strtonum.h"
#include "knot/common/log.h"
#include "utils/common/params.h"
#include "utils/common/signal.h"
#include "utils/knotc/commands.h"
#include "utils/knotc/interactive.h"
#include "utils/knotc/process.h"
#define PROGRAM_NAME "knotc"
#define SPACE " "
signal_ctx_t signal_ctx = { 0 }; // global, needed by signal handler
static void print_help(void)
{
printf("Usage: %s [-c | -C <path>] [options] <action>\n"
"\n"
"Config options:\n"
" -c, --config <file> "SPACE"Use a textual configuration file.\n"
" "SPACE" (default %s)\n"
" -C, --confdb <dir> "SPACE"Use a binary configuration database directory.\n"
" "SPACE" (default %s)\n"
"Options:\n"
" -m, --max-conf-size <MiB>"SPACE"Set maximum size of the configuration database (max 10000 MiB).\n"
" "SPACE" (default %d MiB)\n"
" -s, --socket <path> "SPACE"Use a control UNIX socket path.\n"
" "SPACE" (default %s)\n"
" -t, --timeout <sec> "SPACE"Use a control socket timeout (max 86400 seconds).\n"
" "SPACE" (default %u seconds)\n"
" -b, --blocking "SPACE"Zone event trigger commands wait until the event is finished.\n"
" -e, --extended "SPACE"Show extended output.\n"
" -f, --force "SPACE"Forced operation. Overrides some checks.\n"
" -x, --mono "SPACE"Don't color the output.\n"
" -X, --color "SPACE"Force output colorization.\n"
" -v, --verbose "SPACE"Enable debug output.\n"
" -h, --help "SPACE"Print the program help.\n"
" -V, --version "SPACE"Print the program version.\n",
PROGRAM_NAME, CONF_DEFAULT_FILE, CONF_DEFAULT_DBDIR,
CONF_MAPSIZE, RUN_DIR "/knot.sock", DEFAULT_CTL_TIMEOUT_MS / 1000);
print_commands();
}
params_t params = {
.max_conf_size = (size_t)CONF_MAPSIZE * 1024 * 1024,
.timeout = -1
};
int main(int argc, char **argv)
{
/* Long options. */
struct option opts[] = {
{ "config", required_argument, NULL, 'c' },
{ "confdb", required_argument, NULL, 'C' },
{ "max-conf-size", required_argument, NULL, 'm' },
{ "socket", required_argument, NULL, 's' },
{ "timeout", required_argument, NULL, 't' },
{ "blocking", no_argument, NULL, 'b' },
{ "extended", no_argument, NULL, 'e' },
{ "force", no_argument, NULL, 'f' },
{ "mono", no_argument, NULL, 'x' },
{ "color", no_argument, NULL, 'X' },
{ "verbose", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ NULL }
};
/* Set the time zone. */
tzset();
/* Inititalize the termination signals handler. */
signal_init_std();
params.color = isatty(STDOUT_FILENO);
params.color_force = false;
/* Parse command line arguments */
int opt = 0;
while ((opt = getopt_long(argc, argv, "+c:C:m:s:t:befxXvhV", opts, NULL)) != -1) {
switch (opt) {
case 'c':
params.orig_config = optarg;
break;
case 'C':
params.orig_confdb = optarg;
break;
case 'm':
if (str_to_size(optarg, ¶ms.max_conf_size, 1, 10000) != KNOT_EOK) {
print_help();
return EXIT_FAILURE;
}
/* Convert to bytes. */
params.max_conf_size *= 1024 * 1024;
break;
case 's':
params.socket = optarg;
break;
case 't':
if (str_to_int(optarg, ¶ms.timeout, 0, 86400) != KNOT_EOK) {
print_help();
return EXIT_FAILURE;
}
/* Convert to milliseconds. */
params.timeout *= 1000;
break;
case 'b':
params.blocking = true;
break;
case 'e':
params.extended = true;
break;
case 'f':
params.force = true;
break;
case 'v':
params.verbose = true;
break;
case 'x':
params.color = false;
break;
case 'X':
params.color = true;
params.color_force = true;
break;
case 'h':
print_help();
return EXIT_SUCCESS;
case 'V':
print_version(PROGRAM_NAME);
return EXIT_SUCCESS;
default:
print_help();
return EXIT_FAILURE;
}
}
signal_ctx.color = params.color;
/* Set up simplified logging just to stdout/stderr. */
log_init();
log_levels_set(LOG_TARGET_STDOUT, LOG_SOURCE_ANY,
LOG_MASK(LOG_INFO) | LOG_MASK(LOG_NOTICE));
log_levels_set(LOG_TARGET_STDERR, LOG_SOURCE_ANY, LOG_UPTO(LOG_WARNING));
log_levels_set(LOG_TARGET_SYSLOG, LOG_SOURCE_ANY, 0);
log_flag_set(LOG_FLAG_NOTIMESTAMP | LOG_FLAG_NOINFO);
if (params.verbose) {
log_levels_add(LOG_TARGET_STDOUT, LOG_SOURCE_ANY, LOG_MASK(LOG_DEBUG));
}
int ret;
if (argc - optind < 1) {
ret = interactive_loop(¶ms);
} else {
ret = process_cmd(argc - optind, (const char **)argv + optind, ¶ms);
}
log_close();
return (ret == KNOT_EOK) ? EXIT_SUCCESS : EXIT_FAILURE;
}
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