From eb323e056e747d71867cf965434811c1de925de2 Mon Sep 17 00:00:00 2001 From: Luca Muscariello Date: Sat, 23 Mar 2019 14:13:53 +0100 Subject: [HICN-141] Definition of a C API for hicn-light Change-Id: Id861f0abe58b1e3c9ba8cc76701da0f9c6801748 Signed-off-by: Luca Muscariello Signed-off-by: Angelo Mantellini --- hicn-light/src/hicn/config/controlListRoutes.c | 153 +++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 hicn-light/src/hicn/config/controlListRoutes.c (limited to 'hicn-light/src/hicn/config/controlListRoutes.c') diff --git a/hicn-light/src/hicn/config/controlListRoutes.c b/hicn-light/src/hicn/config/controlListRoutes.c new file mode 100644 index 000000000..97e7c2f5c --- /dev/null +++ b/hicn-light/src/hicn/config/controlListRoutes.c @@ -0,0 +1,153 @@ +/* + * 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 + +#include +#include +#include +#include + +#include + +#include +#include + +#include + +#include +#include + +static CommandReturn _controlListRoutes_Execute(CommandParser *parser, + CommandOps *ops, + PARCList *args); +static CommandReturn _controlListRoutes_HelpExecute(CommandParser *parser, + CommandOps *ops, + PARCList *args); + +static const char *_commandListRoutes = "list routes"; +static const char *_commandListRoutesHelp = "help list routes"; + +// ==================================================== + +CommandOps *controlListRoutes_Create(ControlState *state) { + return commandOps_Create(state, _commandListRoutes, NULL, + _controlListRoutes_Execute, commandOps_Destroy); +} + +CommandOps *controlListRoutes_HelpCreate(ControlState *state) { + return commandOps_Create(state, _commandListRoutesHelp, NULL, + _controlListRoutes_HelpExecute, commandOps_Destroy); +} + +// ==================================================== + +static CommandReturn _controlListRoutes_HelpExecute(CommandParser *parser, + CommandOps *ops, + PARCList *args) { + printf("command: list routes\n"); + printf("\n"); + printf( + "This command will fetch the prefix routing table. For each route, it " + "will list:\n"); + printf(" iface: interface\n"); + printf( + " protocol: the routing protocol, such as STATIC, CONNECTED, etc.\n"); + printf( + " type: LMP or EXACT (longest matching prefix or exact match)\n"); + printf(" cost: The route cost, lower being preferred\n"); + printf(" next: List of next hops by interface id\n"); + printf(" prefix: name prefix\n"); + printf("\n"); + return CommandReturn_Success; +} + +static CommandReturn _controlListRoutes_Execute(CommandParser *parser, + CommandOps *ops, + PARCList *args) { + if (parcList_Size(args) != 2) { + _controlListRoutes_HelpExecute(parser, ops, args); + return CommandReturn_Failure; + } + + ControlState *state = ops->closure; + + // send message and receive response + struct iovec *response = utils_SendRequest(state, LIST_ROUTES, 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; + + // 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); + } + } + + char *addrString = NULL; + in_port_t port = htons(1234); // this is a random port number that is ignored + + if (receivedHeader->length > 0) { + printf("%6.6s %8.8s %70.70s %s\n", "iface", "cost", "prefix", "len"); + } else { + printf(" --- No entry in the list \n"); + } + + for (int i = 0; i < receivedHeader->length; i++) { + list_routes_command *listRoutesCommand = + (list_routes_command *)(receivedPayload + + (i * sizeof(list_routes_command))); + + addrString = utils_CommandAddressToString( + listRoutesCommand->addressType, &listRoutesCommand->address, &port); + + PARCBufferComposer *composer = parcBufferComposer_Create(); + + parcBufferComposer_Format( + composer, "%6u %8u %70.70s %3d", listRoutesCommand->connid, + listRoutesCommand->cost, addrString, listRoutesCommand->len); + + 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 **)&addrString); + 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; +} -- cgit 1.2.3-korg