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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2014-2018 Linaro Limited
*/
/** @cond _ODP_HIDE_FROM_DOXYGEN_ */
/* enable strtok */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
#include <string.h>
#include <odp_api.h>
#include <odp/helper/odph_api.h>
#include <odp_ipsec_sp_db.h>
/** Global pointer to sp db */
sp_db_t *sp_db;
void init_sp_db(void)
{
odp_shm_t shm;
shm = odp_shm_reserve("shm_sp_db",
sizeof(sp_db_t),
ODP_CACHE_LINE_SIZE,
0);
if (shm == ODP_SHM_INVALID) {
ODPH_ERR("Error: shared mem reserve failed.\n");
exit(EXIT_FAILURE);
}
sp_db = odp_shm_addr(shm);
if (sp_db == NULL) {
ODPH_ERR("Error: shared mem alloc failed.\n");
exit(EXIT_FAILURE);
}
memset(sp_db, 0, sizeof(*sp_db));
}
int create_sp_db_entry(char *input, odp_bool_t both_supported)
{
int pos = 0;
char *local;
char *str;
char *save;
char *token;
sp_db_entry_t *entry = &sp_db->array[sp_db->index];
/* Verify we have a good entry */
if (MAX_DB <= sp_db->index)
return -1;
/* Make a local copy */
local = malloc(strlen(input) + 1);
if (NULL == local)
return -1;
strcpy(local, input);
/* Setup for using "strtok_r" to search input string */
str = local;
save = NULL;
/* Parse tokens separated by ',' */
while (NULL != (token = strtok_r(str, ",", &save))) {
str = NULL; /* reset str for subsequent strtok_r calls */
/* Parse token based on its position */
switch (pos) {
case 0:
parse_ipv4_string(token,
&entry->src_subnet.addr,
&entry->src_subnet.mask);
break;
case 1:
parse_ipv4_string(token,
&entry->dst_subnet.addr,
&entry->dst_subnet.mask);
break;
case 2:
if (0 == strcmp(token, "in"))
entry->input = TRUE;
else
entry->input = FALSE;
break;
case 3:
if (0 == strcmp(token, "esp")) {
entry->esp = TRUE;
} else if (0 == strcmp(token, "ah")) {
entry->ah = TRUE;
} else if (0 == strcmp(token, "both")) {
entry->esp = TRUE;
entry->ah = TRUE;
}
break;
default:
printf("ERROR: extra token \"%s\" at position %d\n",
token, pos);
break;
}
/* Advance to next position */
pos++;
}
/* Check if enabling both AH and ESP protocols is supported */
if (!both_supported && (entry->ah && entry->esp)) {
printf("ERROR: enabling both AH and ESP is not supported\n");
free(local);
return -1;
}
/* Verify we parsed exactly the number of tokens we expected */
if (4 != pos) {
printf("ERROR: \"%s\" contains %d tokens, expected 4\n",
input,
pos);
free(local);
return -1;
}
/* Add route to the list */
sp_db->index++;
entry->next = sp_db->list;
sp_db->list = entry;
free(local);
return 0;
}
void dump_sp_db_entry(sp_db_entry_t *entry)
{
char src_subnet_str[MAX_STRING];
char dst_subnet_str[MAX_STRING];
printf(" %s %s %s %s:%s\n",
ipv4_subnet_str(src_subnet_str, &entry->src_subnet),
ipv4_subnet_str(dst_subnet_str, &entry->dst_subnet),
entry->input ? "in" : "out",
entry->esp ? "esp" : "none",
entry->ah ? "ah" : "none");
}
void dump_sp_db(void)
{
sp_db_entry_t *entry;
printf("\n"
"Security policy table\n"
"---------------------\n");
for (entry = sp_db->list; NULL != entry; entry = entry->next)
dump_sp_db_entry(entry);
}
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