mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
c4d3c19b4c
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/5851)
318 lines
8.5 KiB
C
318 lines
8.5 KiB
C
/*
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* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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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 "internal/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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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 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(*ret))) == 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)) == NULL)
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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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OPENSSL_free(pp);
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ret->error = DB_ERROR_WRONG_NUM_FIELDS;
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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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OPENSSL_free(pp);
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goto err;
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}
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}
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BUF_MEM_free(buf);
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return ret;
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err:
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BUF_MEM_free(buf);
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if (ret != NULL) {
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sk_OPENSSL_PSTRING_free(ret->data);
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OPENSSL_free(ret->index);
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OPENSSL_free(ret->qual);
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OPENSSL_free(ret);
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}
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return NULL;
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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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OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
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{
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LHASH_OF(OPENSSL_STRING) *idx;
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OPENSSL_STRING *r, *k;
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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) *)OPENSSL_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 ((k = 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, k);
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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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if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
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db->error = DB_ERROR_MALLOC;
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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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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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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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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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if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
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goto err1;
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}
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}
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if (!sk_OPENSSL_PSTRING_push(db->data, row))
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goto err1;
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return 1;
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err1:
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db->error = DB_ERROR_MALLOC;
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while (i-- > 0) {
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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_delete(db->index[i], row);
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}
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}
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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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lh_OPENSSL_STRING_free(db->index[i]);
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OPENSSL_free(db->index);
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}
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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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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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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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