#include <stdio.h>
#include "cryptlib.h"
#include <openssl/stack.h>
#include <openssl/objects.h>
#undef MIN_NODES
#define MIN_NODES 4
const char STACK_version[]="Stack" OPENSSL_VERSION_PTEXT;
#include <errno.h>
int (*sk_set_cmp_func(STACK *sk, int (*c)(const char * const *,const char * const *)))
(const char * const *, const char * const *)
{
int (*old)(const char * const *,const char * const *)=sk->comp;
if (sk->comp != c)
sk->sorted=0;
sk->comp=c;
return old;
}
STACK *sk_dup(STACK *sk)
{
STACK *ret;
char **s;
if ((ret=sk_new(sk->comp)) == NULL) goto err;
s=(char **)OPENSSL_realloc((char *)ret->data,
(unsigned int)sizeof(char *)*sk->num_alloc);
if (s == NULL) goto err;
ret->data=s;
ret->num=sk->num;
memcpy(ret->data,sk->data,sizeof(char *)*sk->num);
ret->sorted=sk->sorted;
ret->num_alloc=sk->num_alloc;
ret->comp=sk->comp;
return(ret);
err:
if(ret)
sk_free(ret);
return(NULL);
}
STACK *sk_new_null(void)
{
return sk_new((int (*)(const char * const *, const char * const *))0);
}
STACK *sk_new(int (*c)(const char * const *, const char * const *))
{
STACK *ret;
int i;
if ((ret=(STACK *)OPENSSL_malloc(sizeof(STACK))) == NULL)
goto err;
if ((ret->data=(char **)OPENSSL_malloc(sizeof(char *)*MIN_NODES)) == NULL)
goto err;
for (i=0; i<MIN_NODES; i++)
ret->data[i]=NULL;
ret->comp=c;
ret->num_alloc=MIN_NODES;
ret->num=0;
ret->sorted=0;
return(ret);
err:
if(ret)
OPENSSL_free(ret);
return(NULL);
}
int sk_insert(STACK *st, char *data, int loc)
{
char **s;
if(st == NULL) return 0;
if (st->num_alloc <= st->num+1)
{
s=(char **)OPENSSL_realloc((char *)st->data,
(unsigned int)sizeof(char *)*st->num_alloc*2);
if (s == NULL)
return(0);
st->data=s;
st->num_alloc*=2;
}
if ((loc >= (int)st->num) || (loc < 0))
st->data[st->num]=data;
else
{
int i;
char **f,**t;
f=(char **)st->data;
t=(char **)&(st->data[1]);
for (i=st->num; i>=loc; i--)
t[i]=f[i];
#ifdef undef
memmove( (char *)&(st->data[loc+1]),
(char *)&(st->data[loc]),
sizeof(char *)*(st->num-loc));
#endif
st->data[loc]=data;
}
st->num++;
st->sorted=0;
return(st->num);
}
char *sk_delete_ptr(STACK *st, char *p)
{
int i;
for (i=0; i<st->num; i++)
if (st->data[i] == p)
return(sk_delete(st,i));
return(NULL);
}
char *sk_delete(STACK *st, int loc)
{
char *ret;
int i,j;
if(!st || (loc < 0) || (loc >= st->num)) return NULL;
ret=st->data[loc];
if (loc != st->num-1)
{
j=st->num-1;
for (i=loc; i<j; i++)
st->data[i]=st->data[i+1];
}
st->num--;
return(ret);
}
static int internal_find(STACK *st, char *data, int ret_val_options)
{
char **r;
int i;
int (*comp_func)(const void *,const void *);
if(st == NULL) return -1;
if (st->comp == NULL)
{
for (i=0; i<st->num; i++)
if (st->data[i] == data)
return(i);
return(-1);
}
sk_sort(st);
if (data == NULL) return(-1);
comp_func=(int (*)(const void *,const void *))(st->comp);
r=(char **)OBJ_bsearch_ex((char *)&data,(char *)st->data,
st->num,sizeof(char *),comp_func,ret_val_options);
if (r == NULL) return(-1);
return((int)(r-st->data));
}
int sk_find(STACK *st, char *data)
{
return internal_find(st, data, OBJ_BSEARCH_FIRST_VALUE_ON_MATCH);
}
int sk_find_ex(STACK *st, char *data)
{
return internal_find(st, data, OBJ_BSEARCH_VALUE_ON_NOMATCH);
}
int sk_push(STACK *st, char *data)
{
return(sk_insert(st,data,st->num));
}
int sk_unshift(STACK *st, char *data)
{
return(sk_insert(st,data,0));
}
char *sk_shift(STACK *st)
{
if (st == NULL) return(NULL);
if (st->num <= 0) return(NULL);
return(sk_delete(st,0));
}
char *sk_pop(STACK *st)
{
if (st == NULL) return(NULL);
if (st->num <= 0) return(NULL);
return(sk_delete(st,st->num-1));
}
void sk_zero(STACK *st)
{
if (st == NULL) return;
if (st->num <= 0) return;
memset((char *)st->data,0,sizeof(st->data)*st->num);
st->num=0;
}
void sk_pop_free(STACK *st, void (*func)(void *))
{
int i;
if (st == NULL) return;
for (i=0; i<st->num; i++)
if (st->data[i] != NULL)
func(st->data[i]);
sk_free(st);
}
void sk_free(STACK *st)
{
if (st == NULL) return;
if (st->data != NULL) OPENSSL_free(st->data);
OPENSSL_free(st);
}
int sk_num(const STACK *st)
{
if(st == NULL) return -1;
return st->num;
}
char *sk_value(const STACK *st, int i)
{
if(!st || (i < 0) || (i >= st->num)) return NULL;
return st->data[i];
}
char *sk_set(STACK *st, int i, char *value)
{
if(!st || (i < 0) || (i >= st->num)) return NULL;
return (st->data[i] = value);
}
void sk_sort(STACK *st)
{
if (st && !st->sorted)
{
int (*comp_func)(const void *,const void *);
comp_func=(int (*)(const void *,const void *))(st->comp);
qsort(st->data,st->num,sizeof(char *), comp_func);
st->sorted=1;
}
}
int sk_is_sorted(const STACK *st)
{
if (!st)
return 1;
return st->sorted;
}