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