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/*
* Copyright (c) 2017 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 <config.h>
#include <stdbool.h>
#include <stdint.h>
#include <strings.h>
#include <stdlib.h>
#include <stdio.h>
#include <LongBow/runtime.h>
#include <string.h>
#include <parc/security/parc_Security.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Network.h>
#include <parc/algol/parc_List.h>
#include <parc/algol/parc_TreeRedBlack.h>
#include <parc/algol/parc_Time.h>
#include <ccnx/forwarder/metis/config/metis_ControlState.h>
#include <ccnx/forwarder/metis/config/metisControl_Root.h>
#include <ccnx/forwarder/metis/config/metis_CommandParser.h>
struct metis_control_state {
MetisCommandParser *parser;
bool debugFlag;
void *userdata;
CCNxMetaMessage * (*writeRead)(void *userdata, CCNxMetaMessage *msg);
};
MetisControlState *
metisControlState_Create(void *userdata, CCNxMetaMessage * (*writeRead)(void *userdata, CCNxMetaMessage * msg))
{
MetisControlState *state = parcMemory_AllocateAndClear(sizeof(MetisControlState));
assertNotNull(state, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(MetisControlState));
state->parser = metisCommandParser_Create();
state->userdata = userdata;
state->writeRead = writeRead;
state->debugFlag = false;
return state;
}
void
metisControlState_Destroy(MetisControlState **statePtr)
{
assertNotNull(statePtr, "Parameter statePtr must be non-null");
assertNotNull(*statePtr, "Parameter statePtr must dereference t non-null");
MetisControlState *state = *statePtr;
metisCommandParser_Destroy(&state->parser);
parcMemory_Deallocate((void **) &state);
*statePtr = NULL;
}
void
metisControlState_SetDebug(MetisControlState *state, bool debugFlag)
{
assertNotNull(state, "Parameter state must be non-null");
state->debugFlag = debugFlag;
metisCommandParser_SetDebug(state->parser, debugFlag);
}
bool
metisControlState_GetDebug(MetisControlState *state)
{
assertNotNull(state, "Parameter state must be non-null");
return state->debugFlag;
}
void
metisControlState_RegisterCommand(MetisControlState *state, MetisCommandOps *ops)
{
assertNotNull(state, "Parameter state must be non-null");
metisCommandParser_RegisterCommand(state->parser, ops);
}
CCNxMetaMessage *
metisControlState_WriteRead(MetisControlState *state, CCNxMetaMessage *msg)
{
assertNotNull(state, "Parameter state must be non-null");
assertNotNull(msg, "Parameter msg must be non-null");
return state->writeRead(state->userdata, msg);
}
static PARCList *
_metisControlState_ParseStringIntoTokens(const char *originalString)
{
PARCList *list = parcList(parcArrayList_Create(parcArrayList_StdlibFreeFunction), PARCArrayListAsPARCList);
char *token;
char *tofree = parcMemory_StringDuplicate(originalString, strlen(originalString) + 1);
char *string = tofree;
while ((token = strsep(&string, " \t\n")) != NULL) {
if (strlen(token) > 0) {
parcList_Add(list, strdup(token));
}
}
parcMemory_Deallocate((void **) &tofree);
return list;
}
MetisCommandReturn
metisControlState_DispatchCommand(MetisControlState *state, PARCList *args)
{
assertNotNull(state, "Parameter state must be non-null");
return metisCommandParser_DispatchCommand(state->parser, args);
}
int
metisControlState_Interactive(MetisControlState *state)
{
assertNotNull(state, "Parameter state must be non-null");
char *line = NULL;
size_t linecap = 0;
MetisCommandReturn controlReturn = MetisCommandReturn_Success;
while (controlReturn != MetisCommandReturn_Exit && !feof(stdin)) {
fputs("> ", stdout); fflush(stdout);
ssize_t failure = getline(&line, &linecap, stdin);
assertTrue(failure > -1, "Error getline");
PARCList *args = _metisControlState_ParseStringIntoTokens(line);
controlReturn = metisControlState_DispatchCommand(state, args);
parcList_Release(&args);
}
return 0;
}
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