This is the first commit of the hicn projectv19.01

Change-Id: I6f2544ad9b9f8891c88cc4bcce3cf19bd3cc863f
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>

1 files changed, 183 insertions, 0 deletions

diff --git a/hicn-light/src/config/controlSetStrategy.c b/hicn-light/src/config/controlSetStrategy.c
new file mode 100755
index 000000000..7b7c11762
--- /dev/null
+++ b/hicn-light/src/config/controlSetStrategy.c
@@ -0,0 +1,183 @@
+/*
+ * 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 <parc/algol/parc_Network.h>
+
+#include <src/config/controlSetDebug.h>
+#include <src/core/dispatcher.h>
+#include <src/core/forwarder.h>
+
+#include <src/utils/commands.h>
+#include <src/utils/utils.h>
+
+static CommandReturn _controlSetStrategy_Execute(CommandParser *parser,
+                                                 CommandOps *ops,
+                                                 PARCList *args);
+static CommandReturn _controlSetStrategy_HelpExecute(CommandParser *parser,
+                                                     CommandOps *ops,
+                                                     PARCList *args);
+
+static const char *_commandSetStrategy = "set strategy";
+static const char *_commandSetStrategyHelp = "help set strategy";
+
+static const char *_commandSetStrategyOptions[LAST_STRATEGY_VALUE] = {
+    "loadbalancer",
+    "random",
+    "random_per_dash_segment",
+    "loadbalancer_with_delay",
+    "loadbalancer_by_rate",
+    "loadbalancer_best_route"};
+
+// ====================================================
+
+CommandOps *controlSetStrategy_Create(ControlState *state) {
+  return commandOps_Create(state, _commandSetStrategy, NULL,
+                           _controlSetStrategy_Execute, commandOps_Destroy);
+}
+
+CommandOps *controlSetStrategy_HelpCreate(ControlState *state) {
+  return commandOps_Create(state, _commandSetStrategyHelp, NULL,
+                           _controlSetStrategy_HelpExecute, commandOps_Destroy);
+}
+
+// ====================================================
+
+strategy_type _validStrategy(const char *strategy) {
+  strategy_type validStrategy = LAST_STRATEGY_VALUE;
+
+  for (int i = 0; i < LAST_STRATEGY_VALUE; i++) {
+    if (strcmp(_commandSetStrategyOptions[i], strategy) == 0) {
+      validStrategy = i;
+      break;
+    }
+  }
+  return validStrategy;
+}
+
+static CommandReturn _controlSetStrategy_HelpExecute(CommandParser *parser,
+                                                     CommandOps *ops,
+                                                     PARCList *args) {
+  printf("set strategy <prefix> <strategy>\n");
+  printf("prefix: ipv4/ipv6 address (ex: 1234::/64)\n");
+  printf("strategy: strategy identifier\n");
+  printf("available strategies:\n");
+  printf("    random\n");
+  printf("    loadbalancer\n");
+  printf("    random_per_dash_segment\n");
+  printf("    loadbalancer_with_delay\n");
+  printf("\n");
+  return CommandReturn_Success;
+}
+
+static CommandReturn _controlSetStrategy_Execute(CommandParser *parser,
+                                                 CommandOps *ops,
+                                                 PARCList *args) {
+  ControlState *state = ops->closure;
+
+  if (parcList_Size(args) != 4) {
+    _controlSetStrategy_HelpExecute(parser, ops, args);
+    return CommandReturn_Failure;
+  }
+
+  if (((strcmp(parcList_GetAtIndex(args, 0), "set") != 0) ||
+       (strcmp(parcList_GetAtIndex(args, 1), "strategy") != 0))) {
+    _controlSetStrategy_HelpExecute(parser, ops, args);
+    return CommandReturn_Failure;
+  }
+
+  const char *prefixStr = parcList_GetAtIndex(args, 2);
+  char addr[strlen(prefixStr) + 1];
+  // separate address and len
+  char *slash;
+  uint32_t len = UINT32_MAX;
+  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");
+    return CommandReturn_Failure;
+  }
+
+  // allocate command payload
+  set_strategy_command *setStrategyCommand =
+      parcMemory_AllocateAndClear(sizeof(set_strategy_command));
+
+  // check and set IP address
+  if (inet_pton(AF_INET, addr, &setStrategyCommand->address.ipv4) == 1) {
+    if (len == UINT32_MAX) {
+      printf("Netmask not specified: set to 32 by default\n");
+      len = 32;
+    } else if (len > 32) {
+      printf("ERROR: exceeded INET mask length, max=32\n");
+      parcMemory_Deallocate(&setStrategyCommand);
+      return CommandReturn_Failure;
+    }
+    setStrategyCommand->addressType = ADDR_INET;
+  } else if (inet_pton(AF_INET6, addr, &setStrategyCommand->address.ipv6) ==
+             1) {
+    if (len == UINT32_MAX) {
+      printf("Netmask not specified: set to 128 by default\n");
+      len = 128;
+    } else if (len > 128) {
+      printf("ERROR: exceeded INET6 mask length, max=128\n");
+      parcMemory_Deallocate(&setStrategyCommand);
+      return CommandReturn_Failure;
+    }
+    setStrategyCommand->addressType = ADDR_INET6;
+  } else {
+    printf("Error: %s is not a valid network address \n", addr);
+    parcMemory_Deallocate(&setStrategyCommand);
+    return CommandReturn_Failure;
+  }
+
+  const char *strategyStr = parcList_GetAtIndex(args, 3);
+  // check valid strategy
+  strategy_type strategy;
+  if ((strategy = _validStrategy(strategyStr)) == LAST_STRATEGY_VALUE) {
+    printf("Error: invalid strategy \n");
+    parcMemory_Deallocate(&setStrategyCommand);
+    _controlSetStrategy_HelpExecute(parser, ops, args);
+    return CommandReturn_Failure;
+  }
+
+  // Fill remaining payload fields
+  setStrategyCommand->len = len;
+  setStrategyCommand->strategyType = strategy;
+
+  // send message and receive response
+  struct iovec *response = utils_SendRequest(
+      state, SET_STRATEGY, setStrategyCommand, sizeof(set_strategy_command));
+
+  if (!response) {  // get NULL pointer
+    return CommandReturn_Failure;
+  }
+
+  parcMemory_Deallocate(&response);  // free iovec pointer
+  return CommandReturn_Success;
+}