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godot/thirdparty/openssl/crypto/txt_db/txt_db.c

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/* crypto/txt_db/txt_db.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/txt_db.h>
#undef BUFSIZE
#define BUFSIZE 512
const char TXT_DB_version[] = "TXT_DB" OPENSSL_VERSION_PTEXT;
TXT_DB *TXT_DB_read(BIO *in, int num)
{
TXT_DB *ret = NULL;
int er = 1;
int esc = 0;
long ln = 0;
int i, add, n;
int size = BUFSIZE;
int offset = 0;
char *p, *f;
OPENSSL_STRING *pp;
BUF_MEM *buf = NULL;
if ((buf = BUF_MEM_new()) == NULL)
goto err;
if (!BUF_MEM_grow(buf, size))
goto err;
if ((ret = OPENSSL_malloc(sizeof(TXT_DB))) == NULL)
goto err;
ret->num_fields = num;
ret->index = NULL;
ret->qual = NULL;
if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
goto err;
if ((ret->index = OPENSSL_malloc(sizeof(*ret->index) * num)) == NULL)
goto err;
if ((ret->qual = OPENSSL_malloc(sizeof(*(ret->qual)) * num)) == NULL)
goto err;
for (i = 0; i < num; i++) {
ret->index[i] = NULL;
ret->qual[i] = NULL;
}
add = (num + 1) * sizeof(char *);
buf->data[size - 1] = '\0';
offset = 0;
for (;;) {
if (offset != 0) {
size += BUFSIZE;
if (!BUF_MEM_grow_clean(buf, size))
goto err;
}
buf->data[offset] = '\0';
BIO_gets(in, &(buf->data[offset]), size - offset);
ln++;
if (buf->data[offset] == '\0')
break;
if ((offset == 0) && (buf->data[0] == '#'))
continue;
i = strlen(&(buf->data[offset]));
offset += i;
if (buf->data[offset - 1] != '\n')
continue;
else {
buf->data[offset - 1] = '\0'; /* blat the '\n' */
if (!(p = OPENSSL_malloc(add + offset)))
goto err;
offset = 0;
}
pp = (char **)p;
p += add;
n = 0;
pp[n++] = p;
i = 0;
f = buf->data;
esc = 0;
for (;;) {
if (*f == '\0')
break;
if (*f == '\t') {
if (esc)
p--;
else {
*(p++) = '\0';
f++;
if (n >= num)
break;
pp[n++] = p;
continue;
}
}
esc = (*f == '\\');
*(p++) = *(f++);
}
*(p++) = '\0';
if ((n != num) || (*f != '\0')) {
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary
* fix :-( */
fprintf(stderr,
"wrong number of fields on line %ld (looking for field %d, got %d, '%s' left)\n",
ln, num, n, f);
#endif
OPENSSL_free(pp);
er = 2;
goto err;
}
pp[n] = p;
if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary
* fix :-( */
fprintf(stderr, "failure in sk_push\n");
#endif
OPENSSL_free(pp);
er = 2;
goto err;
}
}
er = 0;
err:
BUF_MEM_free(buf);
if (er) {
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
if (er == 1)
fprintf(stderr, "OPENSSL_malloc failure\n");
#endif
if (ret != NULL) {
if (ret->data != NULL)
sk_OPENSSL_PSTRING_free(ret->data);
if (ret->index != NULL)
OPENSSL_free(ret->index);
if (ret->qual != NULL)
OPENSSL_free(ret->qual);
if (ret != NULL)
OPENSSL_free(ret);
}
return (NULL);
} else
return (ret);
}
OPENSSL_STRING *TXT_DB_get_by_index(TXT_DB *db, int idx,
OPENSSL_STRING *value)
{
OPENSSL_STRING *ret;
LHASH_OF(OPENSSL_STRING) *lh;
if (idx >= db->num_fields) {
db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
return (NULL);
}
lh = db->index[idx];
if (lh == NULL) {
db->error = DB_ERROR_NO_INDEX;
return (NULL);
}
ret = lh_OPENSSL_STRING_retrieve(lh, value);
db->error = DB_ERROR_OK;
return (ret);
}
int TXT_DB_create_index(TXT_DB *db, int field, int (*qual) (OPENSSL_STRING *),
LHASH_HASH_FN_TYPE hash, LHASH_COMP_FN_TYPE cmp)
{
LHASH_OF(OPENSSL_STRING) *idx;
OPENSSL_STRING *r, *k;
int i, n;
if (field >= db->num_fields) {
db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
return (0);
}
/* FIXME: we lose type checking at this point */
if ((idx = (LHASH_OF(OPENSSL_STRING) *)lh_new(hash, cmp)) == NULL) {
db->error = DB_ERROR_MALLOC;
return (0);
}
n = sk_OPENSSL_PSTRING_num(db->data);
for (i = 0; i < n; i++) {
r = sk_OPENSSL_PSTRING_value(db->data, i);
if ((qual != NULL) && (qual(r) == 0))
continue;
if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
db->error = DB_ERROR_INDEX_CLASH;
db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
db->arg2 = i;
lh_OPENSSL_STRING_free(idx);
return (0);
}
if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
db->error = DB_ERROR_MALLOC;
lh_OPENSSL_STRING_free(idx);
return (0);
}
}
if (db->index[field] != NULL)
lh_OPENSSL_STRING_free(db->index[field]);
db->index[field] = idx;
db->qual[field] = qual;
return (1);
}
long TXT_DB_write(BIO *out, TXT_DB *db)
{
long i, j, n, nn, l, tot = 0;
char *p, **pp, *f;
BUF_MEM *buf = NULL;
long ret = -1;
if ((buf = BUF_MEM_new()) == NULL)
goto err;
n = sk_OPENSSL_PSTRING_num(db->data);
nn = db->num_fields;
for (i = 0; i < n; i++) {
pp = sk_OPENSSL_PSTRING_value(db->data, i);
l = 0;
for (j = 0; j < nn; j++) {
if (pp[j] != NULL)
l += strlen(pp[j]);
}
if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
goto err;
p = buf->data;
for (j = 0; j < nn; j++) {
f = pp[j];
if (f != NULL)
for (;;) {
if (*f == '\0')
break;
if (*f == '\t')
*(p++) = '\\';
*(p++) = *(f++);
}
*(p++) = '\t';
}
p[-1] = '\n';
j = p - buf->data;
if (BIO_write(out, buf->data, (int)j) != j)
goto err;
tot += j;
}
ret = tot;
err:
if (buf != NULL)
BUF_MEM_free(buf);
return (ret);
}
int TXT_DB_insert(TXT_DB *db, OPENSSL_STRING *row)
{
int i;
OPENSSL_STRING *r;
for (i = 0; i < db->num_fields; i++) {
if (db->index[i] != NULL) {
if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
continue;
r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
if (r != NULL) {
db->error = DB_ERROR_INDEX_CLASH;
db->arg1 = i;
db->arg_row = r;
goto err;
}
}
}
for (i = 0; i < db->num_fields; i++) {
if (db->index[i] != NULL) {
if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
continue;
(void)lh_OPENSSL_STRING_insert(db->index[i], row);
if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
goto err1;
}
}
if (!sk_OPENSSL_PSTRING_push(db->data, row))
goto err1;
return (1);
err1:
db->error = DB_ERROR_MALLOC;
while (i-- > 0) {
if (db->index[i] != NULL) {
if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
continue;
(void)lh_OPENSSL_STRING_delete(db->index[i], row);
}
}
err:
return (0);
}
void TXT_DB_free(TXT_DB *db)
{
int i, n;
char **p, *max;
if (db == NULL)
return;
if (db->index != NULL) {
for (i = db->num_fields - 1; i >= 0; i--)
if (db->index[i] != NULL)
lh_OPENSSL_STRING_free(db->index[i]);
OPENSSL_free(db->index);
}
if (db->qual != NULL)
OPENSSL_free(db->qual);
if (db->data != NULL) {
for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
/*
* check if any 'fields' have been allocated from outside of the
* initial block
*/
p = sk_OPENSSL_PSTRING_value(db->data, i);
max = p[db->num_fields]; /* last address */
if (max == NULL) { /* new row */
for (n = 0; n < db->num_fields; n++)
if (p[n] != NULL)
OPENSSL_free(p[n]);
} else {
for (n = 0; n < db->num_fields; n++) {
if (((p[n] < (char *)p) || (p[n] > max))
&& (p[n] != NULL))
OPENSSL_free(p[n]);
}
}
OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
}
sk_OPENSSL_PSTRING_free(db->data);
}
OPENSSL_free(db);
}
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