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/* Copyright (c) 2008, 2009 Nicira Networks
*
* 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 <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, Nicira Networks gives permission
* to link the code of its release of vswitchd with the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the same
* license as the "OpenSSL" library), and distribute the linked
* executables. You must obey the GNU General Public License in all
* respects for all of the code used other than "OpenSSL". If you modify
* this file, you may extend this exception to your version of the file,
* but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*/
#include <config.h>
#include <dirent.h>
#include <errno.h>
#include <getopt.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "cfg.h"
#include "command-line.h"
#include "svec.h"
#include "timeval.h"
#include "util.h"
#define THIS_MODULE VLM_cfg_mod
#include "vlog.h"
/* Configuration when we first read the configuration file. */
static struct svec orig_cfg = SVEC_EMPTY_INITIALIZER;
static void
usage(char *prog_name, int exit_code)
{
printf("Usage: %s --config-file=FILE ACTIONS\n"
"\nConfig:\n"
" -T, --timeout=MS wait at most MS milliseconds for lock\n"
" -F, --config-file=FILE use configuration FILE\n"
"\nActions:\n"
" -a, --add=ENTRY add ENTRY\n"
" -d, --del-entry=ENTRY delete ENTRY\n"
" -D, --del-section=KEY delete section matching KEY\n"
" --del-match=PATTERN delete entries matching shell PATTERN\n"
" -q, --query=KEY return all entries matching KEY\n"
" -c, --log-changes log changes up to this point\n"
"\nOther options:\n"
" -h, --help display this help message\n"
" -V, --version display version information\n",
prog_name);
exit(exit_code);
}
static void
open_config(char *config_file, int timeout)
{
int error;
error = cfg_set_file(config_file);
if (error) {
ovs_fatal(error, "failed to add configuration file \"%s\"",
config_file);
}
error = cfg_lock(NULL, timeout);
if (error) {
ovs_fatal(error, "could not lock configuration file\n");
}
cfg_get_all(&orig_cfg);
}
static void
print_vals(char *key)
{
struct svec vals;
int i;
svec_init(&vals);
cfg_get_all_strings(&vals, "%s", key);
for (i=0; i<vals.n; i++) {
printf("%s\n", vals.names[i]);
}
}
static void
log_diffs(void)
{
struct svec new_cfg, removed, added;
size_t i;
svec_init(&new_cfg);
cfg_get_all(&new_cfg);
svec_diff(&orig_cfg, &new_cfg, &removed, NULL, &added);
if (removed.n || added.n) {
VLOG_INFO("configuration changes:");
for (i = 0; i < removed.n; i++) {
VLOG_INFO("-%s", removed.names[i]);
}
for (i = 0; i < added.n; i++) {
VLOG_INFO("+%s", added.names[i]);
}
} else {
VLOG_INFO("configuration unchanged");
}
svec_destroy(&added);
svec_destroy(&removed);
svec_swap(&new_cfg, &orig_cfg);
svec_destroy(&new_cfg);
}
int main(int argc, char *argv[])
{
enum {
OPT_DEL_MATCH = UCHAR_MAX + 1,
};
static const struct option long_options[] = {
{"config-file", required_argument, 0, 'F'},
{"timeout", required_argument, 0, 'T'},
{"add", required_argument, 0, 'a'},
{"del-entry", required_argument, 0, 'd'},
{"del-section", required_argument, 0, 'D'},
{"del-match", required_argument, 0, OPT_DEL_MATCH},
{"query", required_argument, 0, 'q'},
{"changes", no_argument, 0, 'c'},
{"verbose", optional_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{0, 0, 0, 0},
};
char *short_options;
bool config_set = false;
int timeout = INT_MAX;
set_program_name(argv[0]);
time_init();
vlog_init();
short_options = long_options_to_short_options(long_options);
for (;;) {
int option;
option = getopt_long(argc, argv, short_options, long_options, NULL);
if (option == -1) {
break;
}
if ((option > UCHAR_MAX || !strchr("FhVv?", option))
&& config_set == false) {
ovs_fatal(0, "no config file specified (use --help for help)");
}
switch (option) {
case 'T':
if (config_set) {
ovs_fatal(0, "--timeout or -T must be specified "
"before --file or -F");
}
timeout = atoi(optarg);
break;
case 'F':
open_config(optarg, timeout);
config_set = true;
break;
case 'a':
cfg_add_entry("%s", optarg);
break;
case 'd':
cfg_del_entry("%s", optarg);
break;
case 'D':
cfg_del_section("%s", optarg);
break;
case OPT_DEL_MATCH:
cfg_del_match("%s", optarg);
break;
case 'q':
print_vals(optarg);
break;
case 'c':
log_diffs();
break;
case 'h':
usage(argv[0], EXIT_SUCCESS);
break;
case 'V':
OVS_PRINT_VERSION(0, 0);
exit(EXIT_SUCCESS);
case 'v':
vlog_set_verbosity(optarg);
break;
case '?':
exit(EXIT_FAILURE);
default:
NOT_REACHED();
}
}
free(short_options);
if (optind != argc) {
ovs_fatal(0, "non-option arguments not accepted "
"(use --help for help)");
}
if (cfg_is_dirty()) {
cfg_write();
}
cfg_unlock();
exit(0);
}
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