BadVPN – Rev 1
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/*
Generated by LwipMibCompiler
*/
#include "lwip/apps/snmp_opts.h"
#if LWIP_SNMP && LWIP_SNMP_V3
#include "lwip/apps/snmp_snmpv2_usm.h"
#include "lwip/apps/snmp.h"
#include "lwip/apps/snmp_core.h"
#include "lwip/apps/snmp_scalar.h"
#include "lwip/apps/snmp_table.h"
#include "lwip/apps/snmpv3.h"
#include "snmpv3_priv.h"
#include "lwip/apps/snmp_snmpv2_framework.h"
#include <string.h>
/* --- usmUser 1.3.6.1.6.3.15.1.2 ----------------------------------------------------- */
static const struct snmp_oid_range usmUserTable_oid_ranges[] = {
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff },
{ 0, 0xff }, { 0, 0xff }, { 0, 0xff }, { 0, 0xff }
};
static void snmp_engineid_to_oid(const char *engineid, u32_t *oid, u32_t len)
{
u8_t i;
for (i = 0; i < len; i++) {
oid[i] = engineid[i];
}
}
static void snmp_oid_to_name(char *name, const u32_t *oid, size_t len)
{
u8_t i;
for (i = 0; i < len; i++) {
name[i] = (char)oid[i];
}
}
static void snmp_name_to_oid(const char *name, u32_t *oid, size_t len)
{
u8_t i;
for (i = 0; i < len; i++) {
oid[i] = name[i];
}
}
static const struct snmp_obj_id *snmp_auth_algo_to_oid(snmpv3_auth_algo_t algo)
{
if (algo == SNMP_V3_AUTH_ALGO_MD5) {
return &usmHMACMD5AuthProtocol;
} else if (algo == SNMP_V3_AUTH_ALGO_SHA) {
return &usmHMACMD5AuthProtocol;
}
return &usmNoAuthProtocol;
}
static const struct snmp_obj_id *snmp_priv_algo_to_oid(snmpv3_priv_algo_t algo)
{
if (algo == SNMP_V3_PRIV_ALGO_DES) {
return &usmDESPrivProtocol;
} else if (algo == SNMP_V3_PRIV_ALGO_AES) {
return &usmAESPrivProtocol;
}
return &usmNoPrivProtocol;
}
char username[32];
static snmp_err_t usmusertable_get_instance(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, struct snmp_node_instance *cell_instance)
{
const char *engineid;
u8_t eid_len;
u32_t engineid_oid[SNMP_V3_MAX_ENGINE_ID_LENGTH];
u8_t name_len;
u8_t engineid_len;
u8_t name_start;
u8_t engineid_start;
LWIP_UNUSED_ARG(column);
snmpv3_get_engine_id(&engineid, &eid_len);
engineid_len = (u8_t)row_oid[0];
engineid_start = 1;
if (engineid_len != eid_len) {
/* EngineID length does not match! */
return SNMP_ERR_NOSUCHINSTANCE;
}
if (engineid_len > row_oid_len) {
/* row OID doesn't contain enough data according to engineid_len.*/
return SNMP_ERR_NOSUCHINSTANCE;
}
/* check if incoming OID length and if values are in plausible range */
if (!snmp_oid_in_range(&row_oid[engineid_start], engineid_len, usmUserTable_oid_ranges, engineid_len)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
snmp_engineid_to_oid(engineid, engineid_oid, engineid_len);
/* Verify EngineID */
if (snmp_oid_equal(&row_oid[engineid_start], engineid_len, engineid_oid, engineid_len)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
name_len = (u8_t)row_oid[engineid_start + engineid_len];
name_start = engineid_start + engineid_len + 1;
if (name_len > SNMP_V3_MAX_USER_LENGTH) {
/* specified name is too long */
return SNMP_ERR_NOSUCHINSTANCE;
}
if (1 + engineid_len + 1 + name_len != row_oid_len) {
/* Length of EngineID and name does not match row oid length. (+2 for length fields)*/
return SNMP_ERR_NOSUCHINSTANCE;
}
/* check if incoming OID length and if values are in plausible range */
if (!snmp_oid_in_range(&row_oid[name_start], name_len, usmUserTable_oid_ranges, name_len)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* Verify if user exists */
memset(username, 0, sizeof(username));
snmp_oid_to_name(username, &row_oid[name_start], name_len);
if (snmpv3_get_user(username, NULL, NULL, NULL, NULL) != ERR_OK) {
return SNMP_ERR_NOSUCHINSTANCE;
}
/* Save name in reference pointer to make it easier to handle later on */
cell_instance->reference.ptr = username;
cell_instance->reference_len = name_len;
/* user was found */
return SNMP_ERR_NOERROR;
}
/*
* valid oid options
* <oid>
* <oid>.<EngineID length>
* <oid>.<EngineID length>.<partial EngineID>
* <oid>.<EngineID length>.<EngineID>
* <oid>.<EngineID length>.<EngineID>.<UserName length>
* <oid>.<EngineID length>.<EngineID>.<UserName length>.<partial UserName>
* <oid>.<EngineID length>.<EngineID>.<UserName length>.<UserName>
*
*/
static snmp_err_t usmusertable_get_next_instance(const u32_t *column, struct snmp_obj_id *row_oid, struct snmp_node_instance *cell_instance)
{
const char *engineid;
u8_t eid_len;
u32_t engineid_oid[SNMP_V3_MAX_ENGINE_ID_LENGTH];
u8_t name_len;
u8_t engineid_len;
u8_t name_start;
u8_t engineid_start = 1;
u8_t i;
struct snmp_next_oid_state state;
u32_t result_temp[LWIP_ARRAYSIZE(usmUserTable_oid_ranges)];
LWIP_UNUSED_ARG(column);
snmpv3_get_engine_id(&engineid, &eid_len);
/* If EngineID might be given */
if (row_oid->len > 0) {
engineid_len = (u8_t)row_oid->id[0];
engineid_start = 1;
if (engineid_len != eid_len) {
/* EngineID length does not match! */
return SNMP_ERR_NOSUCHINSTANCE;
}
if (engineid_len > row_oid->len) {
/* Verify partial EngineID */
snmp_engineid_to_oid(engineid, engineid_oid, row_oid->len - 1);
if (!snmp_oid_equal(&row_oid->id[engineid_start], row_oid->len - 1, engineid_oid, row_oid->len - 1)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
} else {
/* Verify complete EngineID */
snmp_engineid_to_oid(engineid, engineid_oid, engineid_len);
if (!snmp_oid_equal(&row_oid->id[engineid_start], engineid_len, engineid_oid, engineid_len)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
}
/* At this point, the given EngineID (partially) matches the local EngineID.*/
/* If name might also be given */
if (row_oid->len > engineid_start + engineid_len) {
name_len = (u8_t)row_oid->id[engineid_start + engineid_len];
name_start = engineid_start + engineid_len + 1;
if (name_len > SNMP_V3_MAX_USER_LENGTH) {
/* specified name is too long, max length is 32 according to mib file.*/
return SNMP_ERR_NOSUCHINSTANCE;
}
if (row_oid->len < engineid_len + name_len + 2) {
/* Partial name given according to oid.*/
u8_t tmplen = row_oid->len - engineid_len - 2;
if (!snmp_oid_in_range(&row_oid->id[name_start], tmplen, usmUserTable_oid_ranges, tmplen)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
} else {
/* Full name given according to oid. Also test for too much data.*/
u8_t tmplen = row_oid->len - engineid_len - 2;
if (!snmp_oid_in_range(&row_oid->id[name_start], name_len, usmUserTable_oid_ranges, tmplen)) {
return SNMP_ERR_NOSUCHINSTANCE;
}
}
/* At this point the EngineID and (partial) UserName match the local EngineID and UserName.*/
}
}
/* init struct to search next oid */
snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(usmUserTable_oid_ranges));
for (i = 0; i < snmpv3_get_amount_of_users(); i++) {
u32_t test_oid[LWIP_ARRAYSIZE(usmUserTable_oid_ranges)];
test_oid[0] = eid_len;
snmp_engineid_to_oid(engineid, &test_oid[1], eid_len);
snmpv3_get_username(username, i);
test_oid[1 + eid_len] = strlen(username);
snmp_name_to_oid(username, &test_oid[2 + eid_len], strlen(username));
/* check generated OID: is it a candidate for the next one? */
snmp_next_oid_check(&state, test_oid, (u8_t)(1 + eid_len + 1 + strlen(username)), LWIP_PTR_NUMERIC_CAST(void *, i));
}
/* did we find a next one? */
if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) {
snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len);
/* store username for subsequent operations (get/test/set) */
memset(username, 0, sizeof(username));
snmpv3_get_username(username, LWIP_PTR_NUMERIC_CAST(u8_t, state.reference));
cell_instance->reference.ptr = username;
cell_instance->reference_len = strlen(username);
return SNMP_ERR_NOERROR;
}
/* not found */
return SNMP_ERR_NOSUCHINSTANCE;
}
static s16_t usmusertable_get_value(struct snmp_node_instance *cell_instance, void *value)
{
snmpv3_user_storagetype_t storage_type;
switch (SNMP_TABLE_GET_COLUMN_FROM_OID(cell_instance->instance_oid.id)) {
case 3: /* usmUserSecurityName */
MEMCPY(value, cell_instance->reference.ptr, cell_instance->reference_len);
return (s16_t)cell_instance->reference_len;
case 4: /* usmUserCloneFrom */
MEMCPY(value, snmp_zero_dot_zero.id, snmp_zero_dot_zero.len * sizeof(u32_t));
return snmp_zero_dot_zero.len * sizeof(u32_t);
case 5: { /* usmUserAuthProtocol */
const struct snmp_obj_id *auth_algo;
snmpv3_auth_algo_t auth_algo_val;
snmpv3_get_user((const char *)cell_instance->reference.ptr, &auth_algo_val, NULL, NULL, NULL);
auth_algo = snmp_auth_algo_to_oid(auth_algo_val);
MEMCPY(value, auth_algo->id, auth_algo->len * sizeof(u32_t));
return auth_algo->len * sizeof(u32_t);
}
case 6: /* usmUserAuthKeyChange */
return 0;
case 7: /* usmUserOwnAuthKeyChange */
return 0;
case 8: { /* usmUserPrivProtocol */
const struct snmp_obj_id *priv_algo;
snmpv3_priv_algo_t priv_algo_val;
snmpv3_get_user((const char *)cell_instance->reference.ptr, NULL, NULL, &priv_algo_val, NULL);
priv_algo = snmp_priv_algo_to_oid(priv_algo_val);
MEMCPY(value, priv_algo->id, priv_algo->len * sizeof(u32_t));
return priv_algo->len * sizeof(u32_t);
}
case 9: /* usmUserPrivKeyChange */
return 0;
case 10: /* usmUserOwnPrivKeyChange */
return 0;
case 11: /* usmUserPublic */
/* TODO: Implement usmUserPublic */
return 0;
case 12: /* usmUserStorageType */
snmpv3_get_user_storagetype((const char *)cell_instance->reference.ptr, &storage_type);
*(s32_t *)value = storage_type;
return sizeof(s32_t);
case 13: /* usmUserStatus */
*(s32_t *)value = 1; /* active */
return sizeof(s32_t);
default:
LWIP_DEBUGF(SNMP_MIB_DEBUG, ("usmusertable_get_value(): unknown id: %"S32_F"\n", SNMP_TABLE_GET_COLUMN_FROM_OID(cell_instance->instance_oid.id)));
return 0;
}
}
/* --- usmMIBObjects 1.3.6.1.6.3.15.1 ----------------------------------------------------- */
static s16_t usmstats_scalars_get_value(const struct snmp_scalar_array_node_def *node, void *value)
{
u32_t *uint_ptr = (u32_t *)value;
switch (node->oid) {
case 1: /* usmStatsUnsupportedSecLevels */
*uint_ptr = snmp_stats.unsupportedseclevels;
break;
case 2: /* usmStatsNotInTimeWindows */
*uint_ptr = snmp_stats.notintimewindows;
break;
case 3: /* usmStatsUnknownUserNames */
*uint_ptr = snmp_stats.unknownusernames;
break;
case 4: /* usmStatsUnknownEngineIDs */
*uint_ptr = snmp_stats.unknownengineids;
break;
case 5: /* usmStatsWrongDigests */
*uint_ptr = snmp_stats.wrongdigests;
break;
case 6: /* usmStatsDecryptionErrors */
*uint_ptr = snmp_stats.decryptionerrors;
break;
default:
LWIP_DEBUGF(SNMP_MIB_DEBUG, ("usmstats_scalars_get_value(): unknown id: %"S32_F"\n", node->oid));
return 0;
}
return sizeof(*uint_ptr);
}
/* --- snmpUsmMIB ----------------------------------------------------- */
/* --- usmUser 1.3.6.1.6.3.15.1.2 ----------------------------------------------------- */
static const struct snmp_table_col_def usmusertable_columns[] = {
{3, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserSecurityName */
{4, SNMP_ASN1_TYPE_OBJECT_ID, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserCloneFrom */
{5, SNMP_ASN1_TYPE_OBJECT_ID, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserAuthProtocol */
{6, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserAuthKeyChange */
{7, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserOwnAuthKeyChange */
{8, SNMP_ASN1_TYPE_OBJECT_ID, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserPrivProtocol */
{9, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserPrivKeyChange */
{10, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserOwnPrivKeyChange */
{11, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserPublic */
{12, SNMP_ASN1_TYPE_INTEGER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserStorageType */
{13, SNMP_ASN1_TYPE_INTEGER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmUserStatus */
};
static const struct snmp_table_node usmusertable = SNMP_TABLE_CREATE(2, usmusertable_columns, usmusertable_get_instance, usmusertable_get_next_instance, usmusertable_get_value, NULL, NULL);
static const struct snmp_node *const usmuser_subnodes[] = {
&usmusertable.node.node
};
static const struct snmp_tree_node usmuser_treenode = SNMP_CREATE_TREE_NODE(2, usmuser_subnodes);
/* --- usmMIBObjects 1.3.6.1.6.3.15.1 ----------------------------------------------------- */
static const struct snmp_scalar_array_node_def usmstats_scalars_nodes[] = {
{1, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsUnsupportedSecLevels */
{2, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsNotInTimeWindows */
{3, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsUnknownUserNames */
{4, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsUnknownEngineIDs */
{5, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsWrongDigests */
{6, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* usmStatsDecryptionErrors */
};
static const struct snmp_scalar_array_node usmstats_scalars = SNMP_SCALAR_CREATE_ARRAY_NODE(1, usmstats_scalars_nodes, usmstats_scalars_get_value, NULL, NULL);
static const struct snmp_node *const usmmibobjects_subnodes[] = {
&usmstats_scalars.node.node,
&usmuser_treenode.node
};
static const struct snmp_tree_node usmmibobjects_treenode = SNMP_CREATE_TREE_NODE(1, usmmibobjects_subnodes);
/* --- snmpUsmMIB ----------------------------------------------------- */
static const struct snmp_node *const snmpusmmib_subnodes[] = {
&usmmibobjects_treenode.node
};
static const struct snmp_tree_node snmpusmmib_root = SNMP_CREATE_TREE_NODE(15, snmpusmmib_subnodes);
static const u32_t snmpusmmib_base_oid[] = {1, 3, 6, 1, 6, 3, 15};
const struct snmp_mib snmpusmmib = {snmpusmmib_base_oid, LWIP_ARRAYSIZE(snmpusmmib_base_oid), &snmpusmmib_root.node};
#endif /* LWIP_SNMP */