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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 <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 <src/config/controlListConnections.h>
#include <src/utils/commands.h>
#include <src/utils/utils.h>
static CommandReturn _controlListConnections_Execute(CommandParser *parser,
CommandOps *ops,
PARCList *args);
static CommandReturn _controlListConnections_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args);
static const char *_commandListConnections = "list connections";
static const char *_commandListConnectionsHelp = "help list connections";
const char *connTypeString[6] = {"GRE", "TCP", "UDP", "MCAST", "L2", "HICN"};
const char *stateString[3] = {"UP", "DOWN", "UNKNOWN"};
CommandOps *controlListConnections_Create(ControlState *state) {
return commandOps_Create(state, _commandListConnections, NULL,
_controlListConnections_Execute, commandOps_Destroy);
}
CommandOps *controlListConnections_HelpCreate(ControlState *state) {
return commandOps_Create(state, _commandListConnectionsHelp, NULL,
_controlListConnections_HelpExecute,
commandOps_Destroy);
}
// ====================================================
static CommandReturn _controlListConnections_HelpExecute(CommandParser *parser,
CommandOps *ops,
PARCList *args) {
printf("list connections: displays a 1-line summary of each connection\n");
printf("\n");
printf("The columns are:\n");
printf(" connection id : an integer index for the connection\n");
printf(" state : UP or DOWN\n");
printf(
" local address : the local network address associated with the "
"connection\n");
printf(
" remote address: the remote network address associated with the "
"connection\n");
printf(
" protocol : the network protocol (tcp, udp, gre, mcast, "
"ether)\n");
printf("\n");
return CommandReturn_Success;
}
static CommandReturn _controlListConnections_Execute(CommandParser *parser,
CommandOps *ops,
PARCList *args) {
if (parcList_Size(args) != 2) {
_controlListConnections_HelpExecute(parser, ops, args);
return CommandReturn_Failure;
}
ControlState *state = ops->closure;
// send message and receive response
struct iovec *response = utils_SendRequest(state, LIST_CONNECTIONS, NULL, 0);
if (!response) { // get NULL pointer = FAILURE
return CommandReturn_Failure;
}
// Process/Print message
header_control_message *receivedHeader =
(header_control_message *)response[0].iov_base;
uint8_t *receivedPayload = (uint8_t *)response[1].iov_base;
char *sourceString = NULL;
char *destinationString = NULL;
// Allocate output to pass to the main function if the call is not interactive
char **commandOutputMain = NULL;
if (!controlState_IsInteractive(state) && receivedHeader->length > 0) {
commandOutputMain =
parcMemory_Allocate(sizeof(char *) * receivedHeader->length);
for (size_t j = 0; j < receivedHeader->length; j++) {
commandOutputMain[j] = parcMemory_Allocate(sizeof(char) * 128);
}
}
// Process/Print payload
for (int i = 0; i < receivedHeader->length; i++) {
list_connections_command *listConnectionsCommand =
(list_connections_command *)(receivedPayload +
(i * sizeof(list_connections_command)));
sourceString = utils_CommandAddressToString(
listConnectionsCommand->connectionData.ipType,
&listConnectionsCommand->connectionData.localIp,
&listConnectionsCommand->connectionData.localPort);
destinationString = utils_CommandAddressToString(
listConnectionsCommand->connectionData.ipType,
&listConnectionsCommand->connectionData.remoteIp,
&listConnectionsCommand->connectionData.remotePort);
PARCBufferComposer *composer = parcBufferComposer_Create();
parcBufferComposer_Format(
composer, "%5d %4s %s %s %s", listConnectionsCommand->connid,
stateString[listConnectionsCommand->state], sourceString,
destinationString,
connTypeString[listConnectionsCommand->connectionData.connectionType]);
PARCBuffer *tempBuffer = parcBufferComposer_ProduceBuffer(composer);
char *result = parcBuffer_ToString(tempBuffer);
parcBuffer_Release(&tempBuffer);
if (!controlState_IsInteractive(state)) {
strcpy(commandOutputMain[i], result);
}
puts(result);
parcMemory_Deallocate((void **)&result);
parcBufferComposer_Release(&composer);
}
controlState_SetCommandOutput(state, commandOutputMain);
// DEALLOCATE
parcMemory_Deallocate((void **)&sourceString);
parcMemory_Deallocate((void **)&destinationString);
parcMemory_Deallocate(&receivedHeader); // free response[0].iov_base
parcMemory_Deallocate(&receivedPayload); // free response[1].iov_base
parcMemory_Deallocate(&response); // free iovec pointer
return CommandReturn_Success;
}
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