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// Copyright 2020 Google LLC
//
// 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 "postgres.h"
#include "access/xlog.h"
#include "access/xact.h"
#include "common/username.h"
#include "executor/spi.h"
#include "jit/jit.h"
#include "libpq/libpq.h"
#include "libpq/pqsignal.h"
#include "miscadmin.h"
#include "optimizer/optimizer.h"
#include "parser/analyze.h"
#include "parser/parser.h"
#include "storage/proc.h"
#include "tcop/tcopprot.h"
#include "utils/datetime.h"
#include "utils/memutils.h"
#include "utils/portal.h"
#include "utils/snapmgr.h"
#include "utils/timeout.h"
#include <libgen.h>
const char *progname;
static MemoryContext row_description_context = NULL;
static StringInfoData row_description_buf;
static const char *username = "username";
int FuzzerInitialize(char *dbname, char ***argv){
char *av[5];
char arg_path[50];
char path_to_db[50];
char untar[100];
char *exe_path = (*argv)[0];
//dirname() can modify its argument
char *exe_path_copy = strdup(exe_path);
char *dir = dirname(exe_path_copy);
chdir(dir);
free(exe_path_copy);
snprintf(arg_path, sizeof(arg_path), "/tmp/%s/data", dbname);
snprintf(path_to_db, sizeof(path_to_db), "-D\"/tmp/%s/data\"", dbname);
snprintf(untar, sizeof(untar), "rm -rf /tmp/%s; mkdir /tmp/%s; cp -r data /tmp/%s", dbname, dbname, dbname);
av[0] = "tmp_install/usr/local/pgsql/bin/postgres";
av[1] = path_to_db;
av[2] = "-F";
av[3] = "-k\"/tmp\"";
av[4] = NULL;
system(untar);
progname = get_progname(av[0]);
MemoryContextInit();
InitStandaloneProcess(av[0]);
SetProcessingMode(InitProcessing);
InitializeGUCOptions();
process_postgres_switches(4, av, PGC_POSTMASTER, NULL);
SelectConfigFiles(arg_path, progname);
checkDataDir();
ChangeToDataDir();
CreateDataDirLockFile(false);
LocalProcessControlFile(false);
InitializeMaxBackends();
BaseInit();
InitProcess();
PG_SETMASK(&UnBlockSig);
InitPostgres("dbfuzz", InvalidOid, username, InvalidOid, NULL, false);
SetProcessingMode(NormalProcessing);
BeginReportingGUCOptions();
process_session_preload_libraries();
MessageContext = AllocSetContextCreate(TopMemoryContext,
"MessageContext",
ALLOCSET_DEFAULT_SIZES);
row_description_context = AllocSetContextCreate(TopMemoryContext,
"RowDescriptionContext",
ALLOCSET_DEFAULT_SIZES);
MemoryContextSwitchTo(row_description_context);
initStringInfo(&row_description_buf);
MemoryContextSwitchTo(TopMemoryContext);
PgStartTime = GetCurrentTimestamp();
whereToSendOutput = DestNone;
Log_destination = 0;
return 0;
}
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