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/*
* Copyright (c) 2018 PANTHEON.tech.
*
* 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 "sys_util.h"
#include "sc_vpp_comm.h"
#include <string.h>
#include <sysrepo/plugins.h>
char* xpath_find_first_key(const char *xpath, char *key, sr_xpath_ctx_t *state)
{
char *value = NULL;
if (sr_xpath_next_node((char *)xpath, state) == NULL) {
return NULL;
}
while (((value = sr_xpath_node_key_value(NULL,
key, state)) == NULL) &&
(sr_xpath_next_node(NULL, state) != NULL));
return value;
}
// we can call sr_get_item after change is called to see if the value has or has not
// changed (simpleton solution :D)
// sr_get_item(sess, "/ietf-interfaces:interfaces/interface[name='eth0']/enabled", &value);
void log_recv_event(sr_notif_event_t event, const char *msg) {
const char *event_s;
switch (event) {
case SR_EV_VERIFY: event_s = "SR_EV_VERIFY"; break;
case SR_EV_APPLY: event_s = "SR_EV_APPLY"; break;
case SR_EV_ABORT: event_s = "SR_EV_ABORT"; break;
default: event_s = "SR_EV_UNKNOWN";
}
SRP_LOG_DBG("%s: %s\n", msg, event_s);
}
void log_recv_oper(sr_change_oper_t oper, const char *msg) {
const char *oper_s;
switch (oper) {
case SR_OP_CREATED: oper_s = "SR_OP_CREATED"; break;
case SR_OP_DELETED: oper_s = "SR_OP_DELETED"; break;
case SR_OP_MODIFIED: oper_s = "SR_OP_MODIFIED"; break;
case SR_OP_MOVED: oper_s = "SR_OP_MOVED"; break;
default: oper_s = "SR_OP_UNKNOWN"; break;
}
SRP_LOG_DBG("%s: %s\n", msg, oper_s);
}
int ip_prefix_split(const char* ip_prefix)
{
//find the slash
char* slash = strchr(ip_prefix, '/');
if (NULL == slash)
return -1;
//extract subnet mask length
char * eptr = NULL;
u8 mask = strtoul(slash + 1, &eptr, 10);
if (*eptr || mask <= 0)
return -1;
//keep just the address part
*slash = '\0'; //replace '/' with 0
//return mask length
return mask;
}
/**
* @brief Get IPv4 host address from IPv4 prefix.
*
* @param[out] dst Host IPv4 address.
* @param[in] src IPv4 Prefix.
* @param[in] length dst buffer length.
* @param[out] prefix Get Prefix length, optional value. Can be NULL.
* @return -1 when failure, 0 on success.
*/
int get_address_from_prefix(char *dst, const char *src, size_t length,
uint8_t *prefix_length)
{
ARG_CHECK2(-1, src, dst);
size_t size = 0;
char *p = strchr(src, '/');
if (NULL == p) {
return -1;
}
size = p - src;
// + 1, need size for \0
if ((size + 1) > length) {
return -1;
}
strncpy(dst, src, size);
if (NULL != prefix_length) {
*prefix_length = atoi(++p);
}
return 0;
}
/**
* @brief Get IPv4 broadcast IP address form IPv4 network address.
*
* @param[out] broadcat Broadcast Ipv4 address.
* @param[in] network Network IPv4 address.
* @param[in] prefix Prefix number.
* @return -1 when failure, 0 on success.
*/
int get_network_broadcast(sc_ipv4_addr *broadcast, const sc_ipv4_addr *network,
uint8_t prefix_length)
{
uint8_t mask = ~0;
uint8_t tmp_p = prefix_length;
int i;
ARG_CHECK2(-1, network, broadcast);
if (32 < prefix_length) {
SRP_LOG_ERR_MSG("Prefix length to big.");
return -1;
}
for (i = 0; i < 4 ; i++) {
broadcast->address[i] = network->address[i] |
(mask >> (tmp_p > 8 ? 8 : tmp_p));
if (tmp_p >= 8) {
tmp_p -= 8;
} else {
tmp_p = 0;
}
}
return 0;
}
/**
* @brief Get last IPv4 address from the IP range.
*
* @param[out] last_ip_address Last Ipv4 address.
* @param[in] first_ip_address First IPv4 address.
* @param[in] prefix Prefix number.
* @return -1 when failure, 0 on success.
*/
int get_last_ip_address(sc_ipv4_addr* last_ip_address,
const sc_ipv4_addr* first_ip_address,
uint8_t prefix_length)
{
return get_network_broadcast(last_ip_address, first_ip_address,
prefix_length);
}
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