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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <limits.h> // LONG_MAX, LONG_MIN
#include <signal.h>
#include <hicn/ctrl.h>
#ifndef _WIN32
#include <getopt.h>
#endif
#include "color.h"
#include <hicn/ctrl/parse.h>
#include <hicn/ctrl/hicn-light.h>
#include <hicn/util/log.h>
#include <hicn/util/sstrncpy.h>
#define PORT 9695
/*
* Duplicated from hicn_light_ng_api.c while is only available as a module in
* libhicnctrl
*/
const char *command_type_str[] = {
#define _(l, u) [COMMAND_TYPE_##u] = STRINGIZE(u),
foreach_command_type
#undef _
};
static struct option longFormOptions[] = {{"help", no_argument, 0, 'h'},
{"server", required_argument, 0, 'S'},
{"port", required_argument, 0, 'P'},
{0, 0, 0, 0}};
static void usage(char *prog) {
printf("%s: portable hICN forwarder\n", prog);
printf("\n");
printf("Usage: %s COMMAND [PARAMETERS]\n", prog);
printf("\n");
printf(" %s -h This help screen.\n", prog);
printf(" %s help Obtain a list of available commands.\n", prog);
printf("\n");
}
static bool stop = false;
void signal_handler(int sig) {
fprintf(stderr, "Received ^C... quitting !\n");
stop = true;
}
int main(int argc, char *const *argv) {
log_conf.log_level = LOG_INFO;
// Handle termination signal
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = signal_handler;
sigaction(SIGINT, &sa, NULL);
/* Parse commandline */
char *server_ip = NULL;
uint16_t server_port = 0;
for (;;) {
// getopt_long stores the option index here.
int optind = 0;
int c = getopt_long(argc, argv, "dhS:P:", longFormOptions, &optind);
if (c == -1) break;
switch (c) {
case 'd':
log_conf.log_level = LOG_DEBUG;
break;
case 'S':
server_ip = optarg;
break;
case 'P': {
char *endptr;
long val = strtol(optarg, &endptr, 10);
errno = 0; /* To distinguish success/failure after call */
if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) ||
(errno != 0 && val == 0)) {
perror("strtol");
exit(EXIT_FAILURE);
}
if (endptr == optarg) {
fprintf(stderr, "No digits were found.\n");
exit(EXIT_FAILURE);
}
if (*endptr != '\0') {
fprintf(stderr, "Spurious characters after number: %s.\n", endptr);
exit(EXIT_FAILURE);
}
if ((val < 1) || (val > 65535)) {
fprintf(stderr, "Invalid port number: %ld.\n", val);
exit(EXIT_FAILURE);
}
server_port = val;
break;
}
case 'h':
usage(argv[0]);
exit(EXIT_SUCCESS);
default:
fprintf(stderr, "Invalid argument.\n");
usage(argv[0]);
exit(EXIT_FAILURE);
}
}
/* Parse */
char *param = argv[optind];
for (; optind < argc - 1; optind++) {
char *arg = argv[optind];
arg[strlen(arg)] = ' ';
}
if (!param) {
usage(argv[0]);
goto ERR_PARAM;
}
if (strncmp(param, "help", 4) == 0) {
if (help(param) < 0) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}
hc_command_t command = {};
if (parse(param, &command) < 0) {
fprintf(stderr, "Error parsing command : '%s'\n", param);
goto ERR_PARSE;
}
hc_sock_t *s;
if (server_ip) {
if (server_port == 0) server_port = PORT;
#define BUFSIZE 255
char url[BUFSIZE];
snprintf(url, BUFSIZE, "tcp://%s:%d/", server_ip, server_port);
s = hc_sock_create(FORWARDER_TYPE_HICNLIGHT, url);
} else {
s = hc_sock_create(FORWARDER_TYPE_HICNLIGHT, NULL);
}
if (!s) {
fprintf(stderr, "Could not create socket.\n");
goto ERR_SOCKET;
}
if (hc_sock_connect(s) < 0) {
fprintf(stderr, "Could not establish connection to forwarder.\n");
goto ERR_CONNECT;
}
if (!IS_VALID_OBJECT_TYPE(command.object_type) ||
!IS_VALID_ACTION(command.action)) {
fprintf(stderr, "Unsupported command");
goto ERR_PARAM;
}
int rc = UNSUPPORTED_CMD_ERROR;
hc_data_t *data = NULL;
rc = hc_execute(s, command.action, command.object_type, &command.object,
&data);
if (rc < 0) {
switch (rc) {
case INPUT_ERROR:
ERROR("Wrong input parameters");
break;
case UNSUPPORTED_CMD_ERROR:
ERROR("Unsupported command");
break;
default:
ERROR("Error executing command");
break;
}
goto ERR_COMMAND;
}
if (!data) goto ERR_QUERY;
if (!hc_data_get_result(data)) goto ERR_DATA;
if (command.action == ACTION_LIST) {
char buf[MAXSZ_HC_OBJECT];
hc_data_foreach(data, obj, {
rc = hc_object_snprintf(buf, MAXSZ_HC_OBJECT, command.object_type, obj);
if (rc < 0)
WARN("Display error");
else if (rc >= MAXSZ_HC_OBJECT)
WARN("Output truncated");
else
printf("%s\n", buf);
});
}
hc_data_free(data);
hc_sock_free(s);
return EXIT_SUCCESS;
ERR_DATA:
hc_data_free(data);
ERR_QUERY:
ERR_COMMAND:
ERR_CONNECT:
hc_sock_free(s);
ERR_SOCKET:
ERR_PARSE:
ERR_PARAM:
ERROR("Error");
return EXIT_FAILURE;
}
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