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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 <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <parc/assert/parc_Assert.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Network.h>
#include <src/config/controlAddRoute.h>
#include <src/utils/commands.h>
#include <src/utils/utils.h>
static CommandReturn _controlAddRoute_Execute(CommandParser *parser,
CommandOps *ops, PARCList *args);
static CommandReturn _controlAddRoute_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args);
static const char *_commandAddRoute = "add route";
static const char *_commandAddRouteHelp = "help add route";
CommandOps *controlAddRoute_Create(ControlState *state) {
return commandOps_Create(state, _commandAddRoute, NULL,
_controlAddRoute_Execute, commandOps_Destroy);
}
CommandOps *controlAddRoute_HelpCreate(ControlState *state) {
return commandOps_Create(state, _commandAddRouteHelp, NULL,
_controlAddRoute_HelpExecute, commandOps_Destroy);
}
// ====================================================
static CommandReturn _controlAddRoute_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args) {
printf("commands:\n");
printf(" add route <symbolic | connid> <prefix> <cost>\n");
printf("\n");
printf(" symbolic: The symbolic name for an exgress\n");
printf(
" connid: The egress connection id (see 'help list connections')\n");
printf(
" prefix: The hicn name as IPv4 or IPv6 address (e.g 1234::0/64)\n");
printf(" cost: positive integer representing cost\n");
printf("\n");
return CommandReturn_Success;
}
static CommandReturn _controlAddRoute_Execute(CommandParser *parser,
CommandOps *ops, PARCList *args) {
ControlState *state = ops->closure;
if (parcList_Size(args) != 5) {
_controlAddRoute_HelpExecute(parser, ops, args);
return CommandReturn_Failure;
}
const char *symbolicOrConnid = parcList_GetAtIndex(args, 2);
if (!utils_ValidateSymbolicName(symbolicOrConnid) &&
!utils_IsNumber(symbolicOrConnid)) {
printf(
"ERROR: Invalid symbolic or connid:\nsymbolic name must begin with an "
"alpha followed by alphanum;\nconnid must be an integer\n");
return CommandReturn_Failure;
}
unsigned cost = atoi(parcList_GetAtIndex(args, 4));
if (cost == 0) {
printf("ERROR: cost must be positive integer, got %u from '%s'\n", cost,
(char *)parcList_GetAtIndex(args, 4));
return CommandReturn_Failure;
}
const char *prefixStr = parcList_GetAtIndex(args, 3);
char *addr = (char *)malloc((strlen(prefixStr) + 1) * sizeof(char));
// separate address and len
char *slash;
uint32_t len = 0;
strcpy(addr, prefixStr);
slash = strrchr(addr, '/');
if (slash != NULL) {
len = atoi(slash + 1);
*slash = '\0';
}
if (len == 0) {
printf("ERROR: a prefix can not be of length 0\n");
free(addr);
return CommandReturn_Failure;
}
// allocate command payload
add_route_command *addRouteCommand =
parcMemory_AllocateAndClear(sizeof(add_route_command));
// check and set IP address
if (inet_pton(AF_INET, addr, &addRouteCommand->address.ipv4) == 1) {
if (len > 32) {
printf("ERROR: exceeded INET mask length, max=32\n");
parcMemory_Deallocate(&addRouteCommand);
free(addr);
return CommandReturn_Failure;
}
addRouteCommand->addressType = ADDR_INET;
} else if (inet_pton(AF_INET6, addr, &addRouteCommand->address.ipv6) == 1) {
if (len > 128) {
printf("ERROR: exceeded INET6 mask length, max=128\n");
parcMemory_Deallocate(&addRouteCommand);
free(addr);
return CommandReturn_Failure;
}
addRouteCommand->addressType = ADDR_INET6;
} else {
printf("Error: %s is not a valid network address \n", addr);
parcMemory_Deallocate(&addRouteCommand);
free(addr);
return CommandReturn_Failure;
}
free(addr);
// Fill remaining payload fields
addRouteCommand->len = len;
addRouteCommand->cost = (uint16_t)cost;
strcpy(addRouteCommand->symbolicOrConnid, symbolicOrConnid);
// send message and receive response
struct iovec *response = utils_SendRequest(state, ADD_ROUTE, addRouteCommand,
sizeof(add_route_command));
if (!response) { // get NULL pointer
return CommandReturn_Failure;
}
parcMemory_Deallocate(&response); // free iovec pointer
return CommandReturn_Success;
}
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