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/*
* Copyright (C) 2011-2019 Free Software Foundation, Inc.
* Copyright (C) 2019 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
#ifndef GNUTLS_NAME_VAL_ARRAY_H
#define GNUTLS_NAME_VAL_ARRAY_H
#include "gnutls_int.h"
#include "errors.h"
/* Functionality to allow an array of strings. Strings
* are allowed to be added to the list and matched against it.
*/
typedef struct name_val_array_st {
char *name;
unsigned name_size;
char *val;
struct name_val_array_st *next;
} *name_val_array_t;
inline static void _name_val_array_init(name_val_array_t * head)
{
*head = NULL;
}
inline static void _name_val_array_clear(name_val_array_t * head)
{
name_val_array_t prev, array = *head;
while (array != NULL) {
prev = array;
array = prev->next;
gnutls_free(prev);
}
*head = NULL;
}
inline static const char *_name_val_array_value(name_val_array_t head,
const char *name, unsigned name_size)
{
name_val_array_t array = head;
while (array != NULL) {
if (array->name_size == name_size &&
memcmp(array->name, name, name_size) == 0) {
return array->val;
}
array = array->next;
}
return NULL;
}
inline static void append(name_val_array_t array, const char *name,
unsigned name_len, const char *val,
unsigned val_len)
{
array->name = ((char *) array) + sizeof(struct name_val_array_st);
memcpy(array->name, name, name_len);
array->name[name_len] = 0;
array->name_size = name_len;
array->val = ((char *) array) + name_len + 1 + sizeof(struct name_val_array_st);
if (val)
memcpy(array->val, val, val_len);
array->val[val_len] = 0;
array->next = NULL;
}
inline static int _name_val_array_append(name_val_array_t * head,
const char *name,
const char *val)
{
name_val_array_t prev, array;
unsigned name_len = strlen(name);
unsigned val_len = (val==NULL)?0:strlen(val);
if (*head == NULL) {
*head =
gnutls_malloc(val_len + name_len + 2 +
sizeof(struct name_val_array_st));
if (*head == NULL)
return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR);
array = *head;
append(array, name, name_len, val, val_len);
} else {
array = *head;
prev = array;
while (array != NULL) {
prev = array;
array = prev->next;
}
prev->next =
gnutls_malloc(name_len + val_len + 2 +
sizeof(struct name_val_array_st));
array = prev->next;
if (array == NULL)
return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR);
append(array, name, name_len, val, val_len);
}
return 0;
}
#endif
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