From bac3da61644515f05663789b122554dc77549286 Mon Sep 17 00:00:00 2001 From: Luca Muscariello Date: Thu, 17 Jan 2019 13:47:57 +0100 Subject: This is the first commit of the hicn project Change-Id: I6f2544ad9b9f8891c88cc4bcce3cf19bd3cc863f Signed-off-by: Luca Muscariello --- hicn-light/src/config/controlAddListener.c | 178 +++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100755 hicn-light/src/config/controlAddListener.c (limited to 'hicn-light/src/config/controlAddListener.c') diff --git a/hicn-light/src/config/controlAddListener.c b/hicn-light/src/config/controlAddListener.c new file mode 100755 index 000000000..8f687c3a6 --- /dev/null +++ b/hicn-light/src/config/controlAddListener.c @@ -0,0 +1,178 @@ +/* + * 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 + +#include + +#include +#include + +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 \n"); + printf(" add listener udp \n"); + printf(" add listener tcp \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; +} -- cgit 1.2.3-korg