541 lines
14 KiB
C
541 lines
14 KiB
C
/*
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* JSON Object API
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*
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* Copyright (C) 2014-2022 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*
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* Authors: Kevin Lin
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 2 as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include "clamav.h"
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#include "others.h"
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#include "json_api.h"
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#ifdef HAVE_JSON
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cl_error_t cli_json_timeout_cycle_check(cli_ctx *ctx, int *toval)
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{
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if (SCAN_COLLECT_METADATA) {
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if (*toval <= 0) {
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if (cli_checktimelimit(ctx) != CL_SUCCESS) {
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cli_dbgmsg("cli_json_timeout_cycle_check: timeout!\n");
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return CL_ETIMEOUT;
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}
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(*toval)++;
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}
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if (*toval > JSON_TIMEOUT_SKIP_CYCLES) {
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(*toval) = 0;
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}
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}
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return CL_SUCCESS;
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}
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cl_error_t cli_json_parse_error(json_object *root, const char *errstr)
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{
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json_object *perr;
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if (!root)
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return CL_SUCCESS; /* CL_ENULLARG? */
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perr = cli_jsonarray(root, "ParseErrors");
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if (perr == NULL) {
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return CL_EMEM;
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}
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return cli_jsonstr(perr, NULL, errstr);
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}
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cl_error_t cli_jsonnull(json_object *obj, const char *key)
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{
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json_type objty;
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json_object *fpobj = NULL;
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if (NULL == obj) {
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cli_dbgmsg("json: null 'obj' specified to cli_jsonnull\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_jsonnull\n");
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return CL_ENULLARG;
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}
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json_object_object_add(obj, key, fpobj);
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} else if (objty == json_type_array) {
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json_object_array_add(obj, fpobj);
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}
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonstr(json_object *obj, const char *key, const char *s)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: null 'obj' specified to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as 'key' to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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if (NULL == s) {
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cli_dbgmsg("json: null string specified as 's' to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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fpobj = json_object_new_string(s);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json string object\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonstrlen(json_object *obj, const char *key, const char *s, int len)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: null 'obj' specified to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as 'key' to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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if (NULL == s) {
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cli_dbgmsg("json: null string specified as 's' to cli_jsonstr\n");
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return CL_ENULLARG;
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}
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fpobj = json_object_new_string_len(s, len);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json string object\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonint(json_object *obj, const char *key, int32_t i)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: no parent object specified to cli_jsonint\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_jsonint\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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fpobj = json_object_new_int(i);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json int object\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonint64(json_object *obj, const char *key, int64_t i)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: no parent object specified to cli_jsonint64\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_jsonint64\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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fpobj = json_object_new_int64(i);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json int object.\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonbool(json_object *obj, const char *key, int i)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: no parent object specified to cli_jsonbool\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_jsonbool\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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fpobj = json_object_new_boolean(i);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json boolean object.\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsondouble(json_object *obj, const char *key, double d)
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{
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json_type objty;
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json_object *fpobj;
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if (NULL == obj) {
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cli_dbgmsg("json: no parent object specified to cli_jsondouble\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(obj);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_jsondouble\n");
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return CL_ENULLARG;
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}
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} else if (objty != json_type_array) {
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return CL_EARG;
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}
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fpobj = json_object_new_double(d);
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if (NULL == fpobj) {
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cli_errmsg("json: no memory for json double object.\n");
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return CL_EMEM;
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}
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if (objty == json_type_object)
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json_object_object_add(obj, key, fpobj);
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else if (objty == json_type_array)
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json_object_array_add(obj, fpobj);
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return CL_SUCCESS;
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}
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json_object *cli_jsonarray(json_object *obj, const char *key)
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{
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json_type objty;
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json_object *newobj;
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/* First check to see if this key exists */
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if (obj && key && json_object_object_get_ex(obj, key, &newobj)) {
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return json_object_is_type(newobj, json_type_array) ? newobj : NULL;
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}
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newobj = json_object_new_array();
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if (!(newobj))
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return NULL;
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if (obj) {
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objty = json_object_get_type(obj);
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if (key && objty == json_type_object) {
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json_object_object_add(obj, key, newobj);
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if (!json_object_object_get_ex(obj, key, &newobj))
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return NULL;
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} else if (objty == json_type_array) {
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json_object_array_add(obj, newobj);
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}
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}
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return newobj;
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}
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cl_error_t cli_jsonint_array(json_object *obj, int32_t val)
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{
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return cli_jsonint(obj, NULL, val);
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}
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json_object *cli_jsonobj(json_object *obj, const char *key)
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{
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json_type objty;
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json_object *newobj;
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if (obj && key && json_object_object_get_ex(obj, key, &newobj))
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return json_object_is_type(newobj, json_type_object) ? newobj : NULL;
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newobj = json_object_new_object();
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if (!(newobj))
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return NULL;
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if (obj) {
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objty = json_object_get_type(obj);
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if (key && objty == json_type_object) {
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json_object_object_add(obj, key, newobj);
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if (!json_object_object_get_ex(obj, key, &newobj))
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return NULL;
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} else if (objty == json_type_array) {
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json_object_array_add(obj, newobj);
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}
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}
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return newobj;
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}
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#if HAVE_DEPRECATED_JSON
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int json_object_object_get_ex(struct json_object *obj, const char *key, struct json_object **value)
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{
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struct json_object *res;
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if (value != NULL)
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*value = NULL;
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if (obj == NULL)
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return 0;
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if (json_object_get_type(obj) != json_type_object)
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return 0;
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res = json_object_object_get(obj, key);
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if (value != NULL) {
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*value = res;
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return (res != NULL);
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}
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return (res != NULL);
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}
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#endif
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/* adding an object does NOT increment reference count */
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cl_error_t cli_json_addowner(json_object *owner, json_object *child, const char *key, int idx)
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{
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json_type objty;
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if (NULL == owner) {
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cli_dbgmsg("json: no owner object specified to cli_json_addowner\n");
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return CL_ENULLARG;
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}
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if (NULL == child) {
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cli_dbgmsg("json: no child object specified to cli_json_addowner\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(owner);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_addowner\n");
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return CL_ENULLARG;
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}
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json_object_object_add(owner, key, child);
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} else if (objty == json_type_array) {
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if (idx < 0 || NULL == json_object_array_get_idx(owner, idx))
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json_object_array_add(owner, child);
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else if (0 != json_object_array_put_idx(owner, idx, child)) {
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/* this shouldn't be possible */
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cli_dbgmsg("json: cannot delete idx %d of owner array\n", idx);
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return CL_BREAK;
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}
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} else {
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cli_dbgmsg("json: no owner object cannot hold ownership\n");
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return CL_EARG;
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}
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/* increment reference count */
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json_object_get(child);
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return CL_SUCCESS;
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}
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/* deleting an object DOES decrement reference count */
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cl_error_t cli_json_delowner(json_object *owner, const char *key, int idx)
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{
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json_type objty;
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json_object *obj;
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if (NULL == owner) {
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cli_dbgmsg("json: no owner object specified to cli_json_delowner\n");
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return CL_ENULLARG;
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}
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objty = json_object_get_type(owner);
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if (objty == json_type_object) {
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if (NULL == key) {
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cli_dbgmsg("json: null string specified as key to cli_delowner\n");
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return CL_ENULLARG;
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}
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if (!json_object_object_get_ex(owner, key, &obj)) {
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cli_dbgmsg("json: owner array does not have content with key %s\n", key);
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return CL_EARG;
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}
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json_object_object_del(owner, key);
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} else if (objty == json_type_array) {
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json_object *empty;
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if (NULL == json_object_array_get_idx(owner, idx)) {
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cli_dbgmsg("json: owner array does not have content at idx %d\n", idx);
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return CL_EARG;
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}
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/* allocate the empty object to replace target object */
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empty = cli_jsonobj(NULL, NULL);
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if (NULL == empty)
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return CL_EMEM;
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if (0 != json_object_array_put_idx(owner, idx, empty)) {
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/* this shouldn't be possible */
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cli_dbgmsg("json: cannot delete idx %d of owner array\n", idx);
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return CL_BREAK;
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}
|
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} else {
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cli_dbgmsg("json: no owner object cannot hold ownership\n");
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return CL_EARG;
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}
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return CL_SUCCESS;
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|
}
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#else
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cl_error_t cli_json_nojson()
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{
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nojson_func("nojson: json needs to be enabled for this feature\n");
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return CL_SUCCESS;
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}
|
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cl_error_t cli_jsonnull_nojson(const char* key)
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{
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nojson_func("nojson: %s: null\n", key);
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return CL_SUCCESS;
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|
}
|
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cl_error_t cli_jsonstr_nojson(const char* key, const char* s)
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{
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|
nojson_func("nojson: %s: %s\n", key, s);
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return CL_SUCCESS;
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}
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cl_error_t cli_jsonstrlen_nojson(const char* key, const char* s, int len)
|
|
{
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|
char* sp = cli_malloc(len + 1);
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if (NULL == sp) {
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|
cli_errmsg("json: no memory for json strlen object.\n");
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return CL_EMEM;
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}
|
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strncpy(sp, s, len);
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sp[len] = '\0';
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nojson_func("nojson: %s: %s\n", key, sp);
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free(sp);
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return CL_SUCCESS;
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}
|
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|
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cl_error_t cli_jsonint_nojson(const char* key, int32_t i)
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|
{
|
|
nojson_func("nojson: %s: %d\n", key, i);
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return CL_SUCCESS;
|
|
}
|
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|
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cl_error_t cli_jsonint64_nojson(const char* key, int64_t i)
|
|
{
|
|
nojson_func("nojson: %s: %ld\n", key, (long int)i);
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return CL_SUCCESS;
|
|
}
|
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|
|
cl_error_t cli_jsonbool_nojson(const char* key, int i)
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|
{
|
|
nojson_func("nojson: %s: %s\n", key, i ? "true" : "false");
|
|
return CL_SUCCESS;
|
|
}
|
|
|
|
cl_error_t cli_jsondouble_nojson(const char* key, double d)
|
|
{
|
|
nojson_func("nojson: %s: %f\n", key, d);
|
|
return CL_SUCCESS;
|
|
}
|
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void* cli_jsonarray_nojson(const char* key)
|
|
{
|
|
nojson_func("nojson: %s\n", key);
|
|
return NULL;
|
|
}
|
|
|
|
cl_error_t cli_jsonint_array_nojson(int32_t val)
|
|
{
|
|
nojson_func("nojson: %d\n", val);
|
|
return CL_SUCCESS;
|
|
}
|
|
|
|
#endif
|