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load_config.c
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2086 lines (1849 loc) · 81.5 KB
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/*
* json/load_config.c
*
* Copyright (C) 2021-2025 wolfSSL Inc.
*
* This file is part of wolfSentry.
*
* wolfSentry is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSentry is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#include "wolfsentry/wolfsentry_json.h"
#include "wolfsentry/wolfsentry_util.h"
#define WOLFSENTRY_SOURCE_ID WOLFSENTRY_SOURCE_ID_JSON_LOAD_CONFIG_C
#include <stdlib.h>
#include <limits.h>
#define MAX_IPV4_ADDR_BITS (sizeof(struct in_addr) * BITS_PER_BYTE)
#define MAX_IPV6_ADDR_BITS (sizeof(struct in6_addr) * BITS_PER_BYTE)
#define MAX_MAC_ADDR_BITS 64
#ifdef WOLFSENTRY_LWIP
#include "lwip/sockets.h"
#elif defined(WOLFSENTRY_NETXDUO)
#include "wolfsentry/wolfsentry_netxduo.h"
#else
#include <arpa/inet.h>
#include <sys/socket.h>
#endif
#ifndef WOLFSENTRY_NO_GETPROTOBY
#include <netdb.h>
#endif
#ifndef WOLFSENTRY_NO_ERRNO_H
#include <errno.h>
#endif
/* note that the order of objects in the JSON is semantically significant.
* Thus, any application-level JSON preprocessing must be ES5-compliant
* (preserve the order of pairs exactly).
*
* see doc/json_configuration.md
*/
struct wolfsentry_json_process_state {
uint32_t config_version;
wolfsentry_config_load_flags_t load_flags;
enum { T_U_C_NONE = 0, T_U_C_TOPCONFIG, T_U_C_EVENTS, T_U_C_DEFAULTPOLICIES, T_U_C_STATIC_ROUTES, T_U_C_ACTIONS, T_U_C_USER_VALUES } table_under_construction;
enum { O_U_C_NONE = 0, O_U_C_SKIPLEVEL, O_U_C_ROUTE, O_U_C_EVENT, O_U_C_ACTION, O_U_C_USER_VALUE } object_under_construction;
enum { S_U_C_NONE = 0, S_U_C_EVENTCONFIG, S_U_C_FLAGS, S_U_C_ACTION_LIST, S_U_C_REMOTE_ENDPOINT, S_U_C_LOCAL_ENDPOINT, S_U_C_ROUTE_METADATA, S_U_C_USER_VALUE_JSON } section_under_construction;
int cur_depth;
char cur_keyname[WOLFSENTRY_MAX_LABEL_BYTES];
int cur_keydepth;
JSON_INPUT_POS key_pos;
#if defined(WOLFSENTRY_HAVE_JSON_DOM) && defined(WOLFSENTRY_JSON_VALUE_MAX_BYTES)
JSON_INPUT_POS json_value_start_pos;
#endif
wolfsentry_errcode_t fini_ret;
const struct wolfsentry_host_platform_interface *hpi;
struct wolfsentry_eventconfig default_config;
wolfsentry_action_res_t default_policy;
struct wolfsentry_event *default_event;
JSON_PARSER parser;
struct wolfsentry_context *wolfsentry_actual, *wolfsentry;
#ifdef WOLFSENTRY_HAVE_JSON_DOM
unsigned int dom_parser_flags;
JSON_DOM_PARSER dom_parser; /* has a duplicate JSON_PARSER in it that is not used, except for its .wolfsentry_context member. */
#endif
#ifdef WOLFSENTRY_THREADSAFE
struct wolfsentry_thread_context *thread;
int got_reservation;
#define JPS_WOLFSENTRY_CONTEXT_ARGS_OUT jps->wolfsentry, jps->thread
#define JPSP_WOLFSENTRY_CONTEXT_ARGS_OUT (*jps)->wolfsentry, (*jps)->thread
#define JPSP_P_WOLFSENTRY_CONTEXT_ARGS_OUT &(*jps)->wolfsentry, (*jps)->thread
#define JPSP_WOLFSENTRY_ACTUAL_CONTEXT_ARGS_OUT (*jps)->wolfsentry_actual, (*jps)->thread
#else
#define JPS_WOLFSENTRY_CONTEXT_ARGS_OUT jps->wolfsentry
#define JPSP_WOLFSENTRY_CONTEXT_ARGS_OUT (*jps)->wolfsentry
#define JPSP_P_WOLFSENTRY_CONTEXT_ARGS_OUT &(*jps)->wolfsentry
#define JPSP_WOLFSENTRY_ACTUAL_CONTEXT_ARGS_OUT (*jps)->wolfsentry_actual
#endif
union {
struct {
char event_label[WOLFSENTRY_MAX_LABEL_BYTES];
int event_label_len;
void *caller_arg; /* xxx */
WOLFSENTRY_SOCKADDR(WOLFSENTRY_MAX_ADDR_BITS) remote;
WOLFSENTRY_SOCKADDR(WOLFSENTRY_MAX_ADDR_BITS) local;
wolfsentry_route_flags_t flags;
} route;
struct {
char label[WOLFSENTRY_MAX_LABEL_BYTES];
int label_len;
wolfsentry_priority_t priority;
struct wolfsentry_eventconfig config;
int configed;
int inserted;
wolfsentry_action_type_t cur_action_list_under_construction;
} event;
struct {
char label[WOLFSENTRY_MAX_LABEL_BYTES];
int label_len;
wolfsentry_action_flags_t flags;
} action;
struct {
char label[WOLFSENTRY_MAX_LABEL_BYTES];
int label_len;
} user_value;
} o_u_c;
};
static wolfsentry_errcode_t reset_o_u_c(struct wolfsentry_json_process_state *jps) {
switch (jps->object_under_construction) {
case O_U_C_NONE:
case O_U_C_SKIPLEVEL:
WOLFSENTRY_RETURN_OK;
case O_U_C_ROUTE:
case O_U_C_ACTION:
case O_U_C_EVENT:
case O_U_C_USER_VALUE:
break;
default:
WOLFSENTRY_ERROR_RETURN(CONFIG_UNEXPECTED);
}
memset(&jps->o_u_c, 0, sizeof jps->o_u_c);
jps->object_under_construction = O_U_C_NONE;
jps->section_under_construction = S_U_C_NONE;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_uint64(JSON_TYPE type, const unsigned char *data, size_t data_size, uint64_t *out) {
char buf[24];
char *endptr;
#ifdef WOLFSENTRY_HAVE_LONG_LONG
unsigned long long conv;
#else
unsigned long conv;
#endif
/* allow JSON_STRING to accommodate hex and octal values. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
#ifdef WOLFSENTRY_HAVE_LONG_LONG
conv = strtoull(buf, &endptr, 0);
#else
conv = strtoul(buf, &endptr, 0);
#endif
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
*out = (uint64_t)conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_sint64(JSON_TYPE type, const unsigned char *data, size_t data_size, int64_t *out) {
char buf[24];
char *endptr;
#ifdef WOLFSENTRY_HAVE_LONG_LONG
long long conv;
#else
long conv;
#endif
/* allow JSON_STRING to accommodate hex and octal values. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
#ifdef WOLFSENTRY_HAVE_LONG_LONG
conv = strtoll(buf, &endptr, 0);
#else
conv = strtol(buf, &endptr, 0);
#endif
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
*out = (int64_t)conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_uint32(JSON_TYPE type, const unsigned char *data, size_t data_size, uint32_t *out) {
char buf[16];
char *endptr;
unsigned long conv;
/* allow JSON_STRING to accommodate hex and octal values. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
conv = strtoul(buf, &endptr, 0);
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (conv > MAX_UINT_OF(*out))
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
*out = (uint32_t)conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_uint16(JSON_TYPE type, const unsigned char *data, size_t data_size, uint16_t *out) {
char buf[8];
char *endptr;
unsigned long conv;
/* allow JSON_STRING to accommodate hex and octal values. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
conv = strtoul(buf, &endptr, 0);
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (conv > MAX_UINT_OF(*out))
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
*out = (uint16_t)conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_uint8(JSON_TYPE type, const unsigned char *data, size_t data_size, uint8_t *out) {
char buf[4];
char *endptr;
unsigned long conv;
/* allow JSON_STRING to accommodate hex and octal values. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
conv = strtoul(buf, &endptr, 0);
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (conv > MAX_UINT_OF(*out))
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
*out = (uint8_t)conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_double(JSON_TYPE type, const unsigned char *data, size_t data_size, double *out) {
char buf[24];
char *endptr;
double conv;
/* allow JSON_STRING to accommodate hex, octal, Inf, NaN, etc. */
if ((type != JSON_NUMBER) && (type != JSON_STRING))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof buf)
WOLFSENTRY_ERROR_RETURN(NUMERIC_ARG_TOO_BIG);
memcpy(buf, data, data_size);
buf[data_size] = 0;
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
conv = strtod(buf, &endptr);
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
if ((size_t)(endptr - buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
*out = conv;
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_eventconfig_flag(JSON_TYPE type, wolfsentry_eventconfig_flags_t *flags, wolfsentry_eventconfig_flags_t flag) {
if (type == JSON_FALSE)
*flags &= ~flag;
else if (type == JSON_TRUE)
*flags |= flag;
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_wolfsentry_duration(struct wolfsentry_context *wolfsentry, JSON_TYPE type, const unsigned char *data, size_t data_size, wolfsentry_time_t *out) {
wolfsentry_errcode_t ret;
char *endptr;
long conv;
if ((type != JSON_STRING) && (type != JSON_NUMBER))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#ifndef WOLFSENTRY_NO_ERRNO_H
errno = 0;
#endif
conv = strtol((const char *)data, &endptr, 0);
#ifndef WOLFSENTRY_NO_ERRNO_H
if (errno != 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
#endif
switch (*endptr) {
case 'd':
if (conv > LONG_MAX / 24 || conv < LONG_MIN / 24)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
conv *= 24;
/* fallthrough */
case 'h':
if (conv > LONG_MAX / 60 || conv < LONG_MIN / 60)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
conv *= 60;
/* fallthrough */
case 'm':
if (conv > LONG_MAX / 60 || conv < LONG_MIN / 60)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
conv *= 60;
/* fallthrough */
case 's':
++endptr;
break;
default:
break;
}
if ((size_t)(endptr - (char *)data) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if ((ret = wolfsentry_interval_from_seconds(wolfsentry, conv, 0 /* howlong_nsecs */, out)) < 0)
WOLFSENTRY_ERROR_RERETURN(ret);
else
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t convert_default_policy(JSON_TYPE type, const unsigned char *data, size_t data_size, wolfsentry_action_res_t *default_policy) {
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (streq(data, "accept", data_size))
*default_policy = WOLFSENTRY_ACTION_RES_ACCEPT;
else if (streq(data, "reject", data_size))
*default_policy = WOLFSENTRY_ACTION_RES_REJECT;
else if (streq(data, "reset", data_size))
*default_policy = WOLFSENTRY_ACTION_RES_REJECT|WOLFSENTRY_ACTION_RES_PORT_RESET;
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t handle_eventconfig_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size, struct wolfsentry_eventconfig *eventconfig) {
if (jps->cur_depth == 5) {
if ((! strcmp(jps->cur_keyname, "route-flags-to-add-on-insert")) ||
(! strcmp(jps->cur_keyname, "route-flags-to-clear-on-insert")))
{
wolfsentry_route_flags_t flag;
wolfsentry_errcode_t ret;
if (type == JSON_ARRAY_BEG)
WOLFSENTRY_RETURN_OK;
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
ret = wolfsentry_route_flag_assoc_by_name((const char *)data, (int)data_size, &flag);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
if (! strcmp(jps->cur_keyname, "route-flags-to-add-on-insert"))
eventconfig->route_flags_to_add_on_insert |= flag;
else
eventconfig->route_flags_to_clear_on_insert |= flag;
WOLFSENTRY_RETURN_OK;
} else if ((! strcmp(jps->cur_keyname, "action-res-filter-bits-set")) ||
(! strcmp(jps->cur_keyname, "action-res-filter-bits-unset")) ||
(! strcmp(jps->cur_keyname, "action-res-bits-to-add")) ||
(! strcmp(jps->cur_keyname, "action-res-bits-to-clear")))
{
wolfsentry_action_res_t flag;
wolfsentry_errcode_t ret;
if (type == JSON_ARRAY_BEG)
WOLFSENTRY_RETURN_OK;
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
ret = wolfsentry_action_res_assoc_by_name((const char *)data, (int)data_size, &flag);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
if (! strcmp(jps->cur_keyname, "action-res-filter-bits-set"))
eventconfig->action_res_filter_bits_set |= flag;
else if (! strcmp(jps->cur_keyname, "action-res-filter-bits-unset"))
eventconfig->action_res_filter_bits_unset |= flag;
else if (! strcmp(jps->cur_keyname, "action-res-bits-to-add"))
eventconfig->action_res_bits_to_add |= flag;
else
eventconfig->action_res_bits_to_clear |= flag;
WOLFSENTRY_RETURN_OK;
} else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_KEY);
}
if (type == JSON_ARRAY_END)
WOLFSENTRY_RETURN_OK;
if (type == JSON_OBJECT_END) {
/* only here if in T_U_C_TOPCONFIG -- handle_event_clause() handles the JSON_OBJECT_END itself. */
wolfsentry_errcode_t ret;
if (jps->table_under_construction != T_U_C_TOPCONFIG)
WOLFSENTRY_ERROR_RETURN(INTERNAL_CHECK_FATAL);
ret = wolfsentry_defaultconfig_update(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &jps->default_config);
jps->table_under_construction = T_U_C_NONE;
WOLFSENTRY_RERETURN_IF_ERROR(ret);
if (jps->default_policy) {
struct wolfsentry_route_table *routes;
ret = wolfsentry_route_get_main_table(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &routes);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_table_default_policy_set(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, routes, jps->default_policy);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
}
WOLFSENTRY_RETURN_OK;
}
if (! strcmp(jps->cur_keyname, "max-connection-count"))
WOLFSENTRY_ERROR_RERETURN(convert_uint32(type, data, data_size, &eventconfig->max_connection_count));
if (! strcmp(jps->cur_keyname, "penalty-box-duration"))
WOLFSENTRY_ERROR_RERETURN(convert_wolfsentry_duration(jps->wolfsentry, type, data, data_size, &eventconfig->penaltybox_duration));
if (! strcmp(jps->cur_keyname, "route-idle-time-for-purge"))
WOLFSENTRY_ERROR_RERETURN(convert_wolfsentry_duration(jps->wolfsentry, type, data, data_size, &eventconfig->route_idle_time_for_purge));
if (! strcmp(jps->cur_keyname, "derog-thresh-for-penalty-boxing"))
WOLFSENTRY_ERROR_RERETURN(convert_uint32(type, data, data_size, &eventconfig->derogatory_threshold_for_penaltybox));
if (! strcmp(jps->cur_keyname, "derog-thresh-ignore-commendable"))
WOLFSENTRY_ERROR_RERETURN(convert_eventconfig_flag(type, &eventconfig->flags, WOLFSENTRY_EVENTCONFIG_FLAG_DEROGATORY_THRESHOLD_IGNORE_COMMENDABLE));
if (! strcmp(jps->cur_keyname, "commendable-clears-derogatory"))
WOLFSENTRY_ERROR_RERETURN(convert_eventconfig_flag(type, &eventconfig->flags, WOLFSENTRY_EVENTCONFIG_FLAG_COMMENDABLE_CLEARS_DEROGATORY));
if (! strcmp(jps->cur_keyname, "max-purgeable-routes")) {
struct wolfsentry_route_table *route_table;
wolfsentry_hitcount_t max_purgeable_routes;
wolfsentry_errcode_t ret;
if (jps->table_under_construction != T_U_C_TOPCONFIG)
WOLFSENTRY_ERROR_RETURN(CONFIG_MISPLACED_KEY);
ret = convert_uint32(type, data, data_size, &max_purgeable_routes);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_get_main_table(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &route_table);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_table_max_purgeable_routes_set(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, route_table, max_purgeable_routes);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
WOLFSENTRY_RETURN_OK;
}
if (! strcmp(jps->cur_keyname, "max-purgeable-idle-time")) {
struct wolfsentry_route_table *route_table;
wolfsentry_time_t max_purgeable_idle_time;
wolfsentry_errcode_t ret;
if (jps->table_under_construction != T_U_C_TOPCONFIG)
WOLFSENTRY_ERROR_RETURN(CONFIG_MISPLACED_KEY);
ret = convert_wolfsentry_duration(jps->wolfsentry, type, data, data_size, &max_purgeable_idle_time);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_get_main_table(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &route_table);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_table_max_purgeable_idle_time_set(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, route_table, max_purgeable_idle_time);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
WOLFSENTRY_RETURN_OK;
}
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_KEY);
}
static wolfsentry_errcode_t handle_defaultpolicy_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size) {
if (jps->table_under_construction != T_U_C_DEFAULTPOLICIES)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_KEY);
if (type == JSON_OBJECT_END) {
jps->table_under_construction = T_U_C_NONE;
if (jps->default_policy) {
wolfsentry_errcode_t ret;
struct wolfsentry_route_table *routes;
ret = wolfsentry_route_get_main_table(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &routes);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
ret = wolfsentry_route_table_default_policy_set(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, routes, jps->default_policy);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
}
WOLFSENTRY_RETURN_OK;
}
if (! strcmp(jps->cur_keyname, "default-policy"))
WOLFSENTRY_ERROR_RERETURN(convert_default_policy(type, data, data_size, &jps->default_policy));
if (! strcmp(jps->cur_keyname, "default-event")) {
struct wolfsentry_route_table *routes;
wolfsentry_errcode_t ret;
if (WOLFSENTRY_CHECK_BITS(jps->load_flags, WOLFSENTRY_CONFIG_LOAD_FLAG_NO_ROUTES_OR_EVENTS))
WOLFSENTRY_RETURN_OK;
ret = wolfsentry_route_get_main_table(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, &routes);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
WOLFSENTRY_ERROR_RERETURN(wolfsentry_route_table_set_default_event(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, routes, (const char *)data, (int)data_size));
}
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_KEY);
}
static inline int convert_hex_digit(unsigned char digit) {
if ((digit >= '0') && (digit <= '9'))
return digit - '0';
else if ((digit >= 'A') && (digit <= 'F'))
return digit - 'A' + 10;
else if ((digit >= 'a') && (digit <= 'f'))
return digit - 'a' + 10;
else
return -1;
}
static inline int convert_hex_byte(const unsigned char **in, size_t *in_len, byte *out) {
int d1, d2;
if (*in_len < 1)
return -1;
d1 = convert_hex_digit(**in);
if (d1 < 0)
return d1;
++(*in);
--(*in_len);
d2 = convert_hex_digit(**in);
if (d2 < 0) {
*out = (byte)d1;
return 0;
}
++(*in);
--(*in_len);
*out = (byte)((d1 << 4) | d2);
return 0;
}
static wolfsentry_errcode_t convert_sockaddr_address(
struct wolfsentry_json_process_state *jps,
JSON_TYPE type,
const unsigned char *data,
size_t data_size,
struct wolfsentry_sockaddr *sa,
byte *sa_addr)
{
if ((sa->sa_family == WOLFSENTRY_AF_LINK48) || (sa->sa_family == WOLFSENTRY_AF_LINK64)) {
int n;
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
for (n=0; ;) {
if (n == 8)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (convert_hex_byte(&data, &data_size, sa_addr + n) < 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
++n;
if (data_size == 0) {
if (n == 6)
sa->sa_family = WOLFSENTRY_AF_LINK48;
else if (n == 8)
sa->sa_family = WOLFSENTRY_AF_LINK64;
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (sa->addr_len == 0)
sa->addr_len = (wolfsentry_addr_bits_t)(n * 8);
WOLFSENTRY_RETURN_OK;
}
if (*data++ != ':')
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
--data_size;
}
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
}
else if (sa->sa_family == WOLFSENTRY_AF_INET) {
char d_buf[16];
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof d_buf)
WOLFSENTRY_ERROR_RETURN(STRING_ARG_TOO_LONG);
memcpy(d_buf, data, data_size);
d_buf[data_size] = 0;
switch (inet_pton(AF_INET, d_buf, sa_addr)) {
case 1:
if (sa->addr_len == 0)
sa->addr_len = 32;
WOLFSENTRY_RETURN_OK;
case 0:
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
case -1:
default:
WOLFSENTRY_ERROR_RETURN(SYS_OP_FATAL);
}
}
#ifdef WOLFSENTRY_IPV6
else if (sa->sa_family == WOLFSENTRY_AF_INET6) {
char d_buf[64];
if (type != JSON_STRING)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof d_buf)
WOLFSENTRY_ERROR_RETURN(STRING_ARG_TOO_LONG);
memcpy(d_buf, data, data_size);
d_buf[data_size] = 0;
switch (inet_pton(AF_INET6, d_buf, sa_addr)) {
case 1:
if (sa->addr_len == 0)
sa->addr_len = 128;
WOLFSENTRY_RETURN_OK;
case 0:
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
case -1:
default:
WOLFSENTRY_ERROR_RETURN(CONFIG_MISSING_HANDLER);
}
}
#endif
else if (sa->sa_family == WOLFSENTRY_AF_CAN) {
/* accept CAN addrs as either strings consisting of hex or octal numbers, or as a JSON-native decimal integer. */
char d_buf[13], *endptr;
unsigned long addr;
if ((type != JSON_STRING) && (type != JSON_NUMBER))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof d_buf)
WOLFSENTRY_ERROR_RETURN(STRING_ARG_TOO_LONG);
if (sa->addr_len > 32) {
#ifdef WOLFSENTRY_ADDR_BITMASK_MATCHING
if ((jps->section_under_construction == S_U_C_REMOTE_ENDPOINT) ?
(jps->o_u_c.route.flags & WOLFSENTRY_ROUTE_FLAG_REMOTE_ADDR_BITMASK) :
(jps->o_u_c.route.flags & WOLFSENTRY_ROUTE_FLAG_LOCAL_ADDR_BITMASK))
{
if (sa->addr_len > 64)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
} else
#endif
{
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
}
}
memcpy(d_buf, data, data_size);
d_buf[data_size] = 0;
addr = strtoul(d_buf, &endptr, 0);
if ((size_t)(endptr - d_buf) != data_size)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (addr > MAX_UINT_OF(uint32_t))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
sa_addr[0] = (byte)(addr >> 24U);
sa_addr[1] = (byte)(addr >> 16U);
sa_addr[2] = (byte)(addr >> 8U);
sa_addr[3] = (byte)addr;
if (sa->addr_len == 0)
sa->addr_len = 32;
WOLFSENTRY_RETURN_OK;
}
else if (sa->sa_family == WOLFSENTRY_AF_UNSPEC) {
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
}
else {
wolfsentry_addr_family_parser_t parser;
wolfsentry_errcode_t ret;
wolfsentry_addr_bits_t sa_addr_len;
if ((type != JSON_STRING) && (type != JSON_NUMBER))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (wolfsentry_addr_family_get_parser(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, sa->sa_family, &parser) < 0)
WOLFSENTRY_ERROR_RETURN(CONFIG_MISSING_HANDLER);
if (sa->addr_len == 0)
sa_addr_len = WOLFSENTRY_MAX_ADDR_BITS;
else
sa_addr_len = sa->addr_len;
ret = parser(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, (const char *)data, (int)data_size, sa_addr, &sa_addr_len);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
if (sa->addr_len == 0)
sa->addr_len = sa_addr_len;
WOLFSENTRY_ERROR_RERETURN(ret);
}
}
#ifndef WOLFSENTRY_NO_GETPROTOBY
static wolfsentry_errcode_t convert_sockaddr_port_name(struct wolfsentry_json_process_state *jps, const unsigned char *data, size_t data_size, struct wolfsentry_sockaddr *sa) {
char d_buf[64];
char get_buf[256];
char p_name_buf[16];
const char *p_name;
struct protoent protoent, *p;
struct servent servent, *s;
if (! WOLFSENTRY_CHECK_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_TCPLIKE_PORT_NUMBERS))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof d_buf)
WOLFSENTRY_ERROR_RETURN(STRING_ARG_TOO_LONG);
memcpy(d_buf, data, data_size);
d_buf[data_size] = 0;
if (sa->sa_proto != 0) {
if (getprotobynumber_r(
sa->sa_proto,
&protoent,
get_buf, sizeof get_buf,
&p) != 0) {
if (errno == ERANGE)
WOLFSENTRY_ERROR_RETURN(BUFFER_TOO_SMALL);
else
WOLFSENTRY_ERROR_RETURN(ITEM_NOT_FOUND);
}
} else
p = NULL;
if (p) {
size_t p_name_len = strlen(p->p_name) + 1;
if (p_name_len <= sizeof p_name_buf) {
memcpy(p_name_buf, p->p_name, p_name_len);
p_name = p_name_buf;
} else
WOLFSENTRY_ERROR_RETURN(BUFFER_TOO_SMALL);
} else
p_name = NULL;
if (getservbyname_r(d_buf, p_name, &servent, get_buf, sizeof get_buf, &s) != 0) {
if (errno == ERANGE)
WOLFSENTRY_ERROR_RETURN(BUFFER_TOO_SMALL);
else
WOLFSENTRY_ERROR_RETURN(ITEM_NOT_FOUND);
}
sa->sa_port = (wolfsentry_port_t)ntohs((uint16_t)s->s_port);
WOLFSENTRY_RETURN_OK;
}
#endif /* !WOLFSENTRY_NO_GETPROTOBY */
static wolfsentry_errcode_t handle_route_endpoint_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size, struct wolfsentry_sockaddr *sa) {
if (! strcmp(jps->cur_keyname, "port")) {
if (sa->sa_family == WOLFSENTRY_AF_UNSPEC)
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
WOLFSENTRY_CLEAR_BITS(jps->o_u_c.route.flags,
sa == (struct wolfsentry_sockaddr *)&jps->o_u_c.route.remote ?
WOLFSENTRY_ROUTE_FLAG_SA_REMOTE_PORT_WILDCARD :
WOLFSENTRY_ROUTE_FLAG_SA_LOCAL_PORT_WILDCARD);
if (type == JSON_NUMBER)
WOLFSENTRY_ERROR_RERETURN(convert_uint16(type, data, data_size, &sa->sa_port));
#ifndef WOLFSENTRY_NO_GETPROTOBY
else if (type == JSON_STRING)
WOLFSENTRY_ERROR_RERETURN(convert_sockaddr_port_name(jps, data, data_size, sa));
#endif
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
} else if (! strcmp(jps->cur_keyname, "address")) {
if (sa->sa_family == WOLFSENTRY_AF_UNSPEC)
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
WOLFSENTRY_CLEAR_BITS(jps->o_u_c.route.flags,
sa == (struct wolfsentry_sockaddr *)&jps->o_u_c.route.remote ?
WOLFSENTRY_ROUTE_FLAG_SA_REMOTE_ADDR_WILDCARD :
WOLFSENTRY_ROUTE_FLAG_SA_LOCAL_ADDR_WILDCARD);
WOLFSENTRY_ERROR_RERETURN(convert_sockaddr_address(jps, type, data, data_size, sa, sa->addr));
}
#ifdef WOLFSENTRY_ADDR_BITMASK_MATCHING
else if (! strcmp(jps->cur_keyname, "bitmask")) {
wolfsentry_addr_bits_t addr_size;
wolfsentry_errcode_t ret;
if (sa->sa_family == WOLFSENTRY_AF_UNSPEC)
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
ret = wolfsentry_addr_family_max_addr_bits(
JPS_WOLFSENTRY_CONTEXT_ARGS_OUT,
sa->sa_family,
&addr_size);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
if (addr_size & 0x7)
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if ((addr_size << 1) > WOLFSENTRY_MAX_ADDR_BITS)
WOLFSENTRY_ERROR_RETURN(BUFFER_TOO_SMALL);
/* if the address was already supplied and is shorter than the bitmask,
* move it to right-justified position.
*/
if ((sa->addr_len != 0) && (sa->addr_len != addr_size)) {
size_t pad_bytes = WOLFSENTRY_BITS_TO_BYTES((size_t)addr_size - (size_t)sa->addr_len);
memmove(sa->addr + pad_bytes, sa->addr, sa->addr_len);
memset(sa->addr, 0, pad_bytes);
}
if (jps->section_under_construction == S_U_C_REMOTE_ENDPOINT)
WOLFSENTRY_SET_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_REMOTE_ADDR_BITMASK);
else
WOLFSENTRY_SET_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_LOCAL_ADDR_BITMASK);
ret = convert_sockaddr_address(jps, type, data, data_size, sa, sa->addr + WOLFSENTRY_BITS_TO_BYTES(addr_size));
WOLFSENTRY_RERETURN_IF_ERROR(ret);
sa->addr_len = (wolfsentry_addr_bits_t)(addr_size << 1);
WOLFSENTRY_ERROR_RERETURN(ret);
}
#endif
else if (! strcmp(jps->cur_keyname, "prefix-bits")) {
if (sa->sa_family == WOLFSENTRY_AF_UNSPEC)
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
#ifdef WOLFSENTRY_ADDR_BITMASK_MATCHING
if (((jps->section_under_construction == S_U_C_REMOTE_ENDPOINT) &&
(jps->o_u_c.route.flags & WOLFSENTRY_ROUTE_FLAG_REMOTE_ADDR_BITMASK))
||
((jps->section_under_construction == S_U_C_LOCAL_ENDPOINT) &&
(jps->o_u_c.route.flags & WOLFSENTRY_ROUTE_FLAG_LOCAL_ADDR_BITMASK)))
{
WOLFSENTRY_ERROR_RETURN(CONFIG_MISPLACED_KEY);
}
#endif
WOLFSENTRY_ERROR_RERETURN(convert_uint16(type, data, data_size, &sa->addr_len));
}
else if (! strcmp(jps->cur_keyname, "interface")) {
WOLFSENTRY_CLEAR_BITS(jps->o_u_c.route.flags,
sa == (struct wolfsentry_sockaddr *)&jps->o_u_c.route.remote ?
WOLFSENTRY_ROUTE_FLAG_REMOTE_INTERFACE_WILDCARD :
WOLFSENTRY_ROUTE_FLAG_LOCAL_INTERFACE_WILDCARD);
WOLFSENTRY_ERROR_RERETURN(convert_uint8(type, data, data_size, &sa->interface));
} else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_KEY);
}
static wolfsentry_errcode_t handle_route_boolean_clause(JSON_TYPE type, wolfsentry_route_flags_t *flags, wolfsentry_route_flags_t bit) {
if (type == JSON_TRUE) {
WOLFSENTRY_SET_BITS(*flags, bit);
WOLFSENTRY_RETURN_OK;
} else if (type == JSON_FALSE) {
WOLFSENTRY_CLEAR_BITS(*flags, bit);
WOLFSENTRY_RETURN_OK;
} else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
}
static wolfsentry_errcode_t handle_route_family_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size) {
WOLFSENTRY_CLEAR_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_SA_FAMILY_WILDCARD);
if (type == JSON_NUMBER) {
wolfsentry_errcode_t ret = convert_uint16(type, data, data_size, &jps->o_u_c.route.remote.sa_family);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
jps->o_u_c.route.local.sa_family = jps->o_u_c.route.remote.sa_family;
WOLFSENTRY_RETURN_OK;
}
#ifdef WOLFSENTRY_PROTOCOL_NAMES
else if (type == JSON_STRING) {
wolfsentry_errcode_t ret;
ret = wolfsentry_addr_family_pton(JPS_WOLFSENTRY_CONTEXT_ARGS_OUT, (const char *)data, (int)data_size, &jps->o_u_c.route.local.sa_family);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
jps->o_u_c.route.remote.sa_family = jps->o_u_c.route.local.sa_family;
WOLFSENTRY_ERROR_RERETURN(ret);
}
#endif
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
}
static wolfsentry_errcode_t handle_route_protocol_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size) {
WOLFSENTRY_CLEAR_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_SA_PROTO_WILDCARD);
if (type == JSON_NUMBER) {
wolfsentry_errcode_t ret = convert_uint16(type, data, data_size, &jps->o_u_c.route.remote.sa_proto);
WOLFSENTRY_RERETURN_IF_ERROR(ret);
jps->o_u_c.route.local.sa_proto = jps->o_u_c.route.remote.sa_proto;
}
#ifndef WOLFSENTRY_NO_GETPROTOBY
else if (type == JSON_STRING) {
char d_buf[64];
char get_buf[256];
struct protoent protoent, *p;
if (jps->o_u_c.route.remote.sa_family == WOLFSENTRY_AF_UNSPEC)
WOLFSENTRY_ERROR_RETURN(CONFIG_OUT_OF_SEQUENCE);
if ((jps->o_u_c.route.remote.sa_family != WOLFSENTRY_AF_INET) &&
(jps->o_u_c.route.remote.sa_family != WOLFSENTRY_AF_INET6))
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (data_size >= sizeof d_buf)
WOLFSENTRY_ERROR_RETURN(STRING_ARG_TOO_LONG);
memcpy(d_buf, data, data_size);
d_buf[data_size] = 0;
if (getprotobyname_r(
d_buf,
&protoent,
get_buf, sizeof get_buf,
&p) != 0) {
if (errno == ERANGE)
WOLFSENTRY_ERROR_RETURN(BUFFER_TOO_SMALL);
else
WOLFSENTRY_ERROR_RETURN(ITEM_NOT_FOUND);
}
jps->o_u_c.route.remote.sa_proto = (wolfsentry_proto_t)p->p_proto;
jps->o_u_c.route.local.sa_proto = (wolfsentry_proto_t)p->p_proto;
}
#endif /* !WOLFSENTRY_NO_GETPROTOBY */
else
WOLFSENTRY_ERROR_RETURN(CONFIG_INVALID_VALUE);
if (((jps->o_u_c.route.remote.sa_family == WOLFSENTRY_AF_INET) || (jps->o_u_c.route.remote.sa_family == WOLFSENTRY_AF_INET6)) &&
((jps->o_u_c.route.remote.sa_proto == IPPROTO_TCP) || (jps->o_u_c.route.remote.sa_proto == IPPROTO_UDP)))
WOLFSENTRY_SET_BITS(jps->o_u_c.route.flags, WOLFSENTRY_ROUTE_FLAG_TCPLIKE_PORT_NUMBERS);
WOLFSENTRY_RETURN_OK;
}
static wolfsentry_errcode_t handle_route_clause(struct wolfsentry_json_process_state *jps, JSON_TYPE type, const unsigned char *data, size_t data_size) {
wolfsentry_errcode_t ret;
if ((jps->cur_depth == 2) && (type == JSON_OBJECT_END)) {
wolfsentry_ent_id_t id;
wolfsentry_action_res_t action_results;
if (WOLFSENTRY_CHECK_BITS(jps->load_flags, WOLFSENTRY_CONFIG_LOAD_FLAG_NO_ROUTES_OR_EVENTS))
ret = WOLFSENTRY_ERROR_ENCODE(OK);
else
ret = wolfsentry_route_insert(
JPS_WOLFSENTRY_CONTEXT_ARGS_OUT,
jps->o_u_c.route.caller_arg,
(const struct wolfsentry_sockaddr *)&jps->o_u_c.route.remote,
(const struct wolfsentry_sockaddr *)&jps->o_u_c.route.local,