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/*
* Copyright (c) 2017-2019 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 <src/config.h>
#include <ctype.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <parc/assert/parc_Assert.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Network.h>
#include <src/config/controlAddListener.h>
#include <src/utils/commands.h>
#include <src/utils/utils.h>
static CommandReturn _controlAddListener_Execute(CommandParser *parser,
CommandOps *ops,
PARCList *args);
static CommandReturn _controlAddListener_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args);
static const char *command_add_listener = "add listener";
static const char *command_help_add_listener = "help add listener";
CommandOps *controlAddListener_Create(ControlState *state) {
return commandOps_Create(state, command_add_listener, NULL,
_controlAddListener_Execute, commandOps_Destroy);
}
CommandOps *controlAddListener_HelpCreate(ControlState *state) {
return commandOps_Create(state, command_help_add_listener, NULL,
_controlAddListener_HelpExecute, commandOps_Destroy);
}
// ====================================================
static const int _indexProtocol = 2;
static const int _indexSymbolic = 3;
static const int _indexAddress = 4;
static const int _indexPort = 5;
static CommandReturn _controlAddListener_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args) {
printf("commands:\n");
printf(" add listener hicn <symbolic> <localAddress> \n");
printf(" add listener udp <symbolic> <localAddress> <port> \n");
printf(" add listener tcp <symbolic> <localAddress> <port> \n");
printf("\n");
printf(
" symbolic: User defined name for listener, must start with "
"alpha and be alphanum\n");
printf(" protocol: hicn | udp\n");
printf(
" localAddress: IPv4 or IPv6 address (or prefix protocol = hicn) "
"assigend to the local interface\n");
printf(" port: Udp port\n");
printf("\n");
printf("Notes:\n");
printf(" The symblic name must be unique or the source will reject it.\n");
printf(
" If protocol = hinc: the address 0::0 indicates the main listern, "
"for which we can set punting rules.\n");
return CommandReturn_Success;
}
static CommandReturn _CreateListener(CommandParser *parser, CommandOps *ops,
const char *symbolic, const char *addr,
const char *port, listener_mode mode,
connection_type type) {
ControlState *state = ops->closure;
// allocate command payload
add_listener_command *addListenerCommand =
parcMemory_AllocateAndClear(sizeof(add_listener_command));
// check and set IP address
if (inet_pton(AF_INET, addr, &addListenerCommand->address.ipv4) == 1) {
addListenerCommand->addressType = ADDR_INET;
} else if (inet_pton(AF_INET6, addr, &addListenerCommand->address.ipv6) ==
1) {
addListenerCommand->addressType = ADDR_INET6;
} else {
printf("Error: %s is not a valid network address \n", addr);
parcMemory_Deallocate(&addListenerCommand);
return CommandReturn_Failure;
}
// Fill remaining payload fields
addListenerCommand->listenerMode = mode;
addListenerCommand->connectionType = type;
addListenerCommand->port = htons((uint16_t)atoi(port));
strcpy(addListenerCommand->symbolic, symbolic);
// send message and receive response
struct iovec *response = utils_SendRequest(
state, ADD_LISTENER, addListenerCommand, sizeof(add_listener_command));
if (!response) { // get NULL pointer
return CommandReturn_Failure;
}
parcMemory_Deallocate(&response); // free iovec pointer
return CommandReturn_Success;
}
static CommandReturn _controlAddListener_Execute(CommandParser *parser,
CommandOps *ops,
PARCList *args) {
if (parcList_Size(args) != 5 && parcList_Size(args) != 6) {
_controlAddListener_HelpExecute(parser, ops, args);
return CommandReturn_Failure;
}
CommandReturn result = CommandReturn_Failure;
const char *symbolic = parcList_GetAtIndex(args, _indexSymbolic);
if (!utils_ValidateSymbolicName(symbolic)) {
printf(
"Error: symbolic name must begin with an alpha and be alphanum "
"after\n");
return result;
}
const char *host = parcList_GetAtIndex(args, _indexAddress);
const char *protocol = parcList_GetAtIndex(args, _indexProtocol);
if ((strcasecmp("hicn", protocol) == 0)) {
const char *port =
"1234"; // this is a random port number that will be ignored
// here we discard the prefix len if it exists, since we don't use it in
// code but we let libhicn to find the right ip address.
return _CreateListener(parser, ops, symbolic, host, port, HICN_MODE,
HICN_CONN);
}
const char *port = parcList_GetAtIndex(args, _indexPort);
if ((strcasecmp("udp", protocol) == 0)) {
return _CreateListener(parser, ops, symbolic, host, port, IP_MODE,
UDP_CONN);
} else if ((strcasecmp("tcp", protocol) == 0)) {
return _CreateListener(parser, ops, symbolic, host, port, IP_MODE,
TCP_CONN);
} else {
_controlAddListener_HelpExecute(parser, ops, args);
return CommandReturn_Failure;
}
if (result == CommandReturn_Failure) printf("creation failed\n");
return result;
}
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