[thirdparty/openssl.git] / crypto / txt_db / txt_db.c

/*
 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/txt_db.h>

#undef BUFSIZE
#define BUFSIZE 512

TXT_DB *TXT_DB_read(BIO *in, int num)
{
    TXT_DB *ret = NULL;
    int esc = 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(*ret))) == 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);
        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)) == NULL)
                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')) {
            OPENSSL_free(pp);
            ret->error = DB_ERROR_WRONG_NUM_FIELDS;
            goto err;
        }
        pp[n] = p;
        if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
            OPENSSL_free(pp);
            goto err;
        }
    }
    BUF_MEM_free(buf);
    return ret;
 err:
    BUF_MEM_free(buf);
    if (ret != NULL) {
        sk_OPENSSL_PSTRING_free(ret->data);
        OPENSSL_free(ret->index);
        OPENSSL_free(ret->qual);
        OPENSSL_free(ret);
    }
    return NULL;
}

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 *),
                        OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC 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) *)OPENSSL_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;
        }
    }
    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:
    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--)
            lh_OPENSSL_STRING_free(db->index[i]);
        OPENSSL_free(db->index);
    }
    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++)
                    OPENSSL_free(p[n]);
            } else {
                for (n = 0; n < db->num_fields; n++) {
                    if (((p[n] < (char *)p) || (p[n] > max)))
                        OPENSSL_free(p[n]);
                }
            }
            OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
        }
        sk_OPENSSL_PSTRING_free(db->data);
    }
    OPENSSL_free(db);
}
Commit	Line	Data
aa6bb135	1	/*
c4d3c19b	2	* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
0e9725bc	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
aa6bb135 RS	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
d02b48c6 RE	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
b39fc560	13	#include "internal/cryptlib.h"
ec577822 BM	14	#include <openssl/buffer.h>
ec577822 BM	15	#include <openssl/txt_db.h>
d02b48c6 RE	16
d02b48c6 RE	17	#undef BUFSIZE
0f113f3e	18	#define BUFSIZE 512
d02b48c6	19
6b691a5c	20	TXT_DB TXT_DB_read(BIO in, int num)
0f113f3e MC	21	{
0f113f3e MC	22	TXT_DB *ret = NULL;
0f113f3e	23	int esc = 0;
0f113f3e MC	24	int i, add, n;
	25	int size = BUFSIZE;
	26	int offset = 0;
	27	char p, f;
	28	OPENSSL_STRING *pp;
	29	BUF_MEM *buf = NULL;
d02b48c6	30
0f113f3e MC	31	if ((buf = BUF_MEM_new()) == NULL)
	32	goto err;
	33	if (!BUF_MEM_grow(buf, size))
	34	goto err;
d02b48c6	35
b4faea50	36	if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
0f113f3e MC	37	goto err;
	38	ret->num_fields = num;
	39	ret->index = NULL;
	40	ret->qual = NULL;
	41	if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
	42	goto err;
	43	if ((ret->index = OPENSSL_malloc(sizeof(ret->index) num)) == NULL)
	44	goto err;
	45	if ((ret->qual = OPENSSL_malloc(sizeof((ret->qual)) num)) == NULL)
	46	goto err;
	47	for (i = 0; i < num; i++) {
	48	ret->index[i] = NULL;
	49	ret->qual[i] = NULL;
	50	}
d02b48c6	51
0f113f3e MC	52	add = (num + 1) * sizeof(char *);
	53	buf->data[size - 1] = '\0';
	54	offset = 0;
	55	for (;;) {
	56	if (offset != 0) {
	57	size += BUFSIZE;
	58	if (!BUF_MEM_grow_clean(buf, size))
	59	goto err;
	60	}
	61	buf->data[offset] = '\0';
	62	BIO_gets(in, &(buf->data[offset]), size - offset);
0f113f3e MC	63	if (buf->data[offset] == '\0')
	64	break;
	65	if ((offset == 0) && (buf->data[0] == '#'))
	66	continue;
	67	i = strlen(&(buf->data[offset]));
	68	offset += i;
	69	if (buf->data[offset - 1] != '\n')
	70	continue;
	71	else {
	72	buf->data[offset - 1] = '\0'; /* blat the '\n' */
75ebbd9a	73	if ((p = OPENSSL_malloc(add + offset)) == NULL)
0f113f3e MC	74	goto err;
	75	offset = 0;
	76	}
	77	pp = (char **)p;
	78	p += add;
	79	n = 0;
	80	pp[n++] = p;
	81	i = 0;
	82	f = buf->data;
d02b48c6	83
0f113f3e MC	84	esc = 0;
	85	for (;;) {
	86	if (*f == '\0')
	87	break;
	88	if (*f == '\t') {
	89	if (esc)
	90	p--;
	91	else {
	92	*(p++) = '\0';
	93	f++;
	94	if (n >= num)
	95	break;
	96	pp[n++] = p;
	97	continue;
	98	}
	99	}
	100	esc = (*f == '\\');
	101	(p++) = (f++);
	102	}
	103	*(p++) = '\0';
	104	if ((n != num) \|\| (*f != '\0')) {
9ad52c56	105	OPENSSL_free(pp);
51b04a61	106	ret->error = DB_ERROR_WRONG_NUM_FIELDS;
0f113f3e MC	107	goto err;
	108	}
	109	pp[n] = p;
9ad52c56 BE	110	if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
9ad52c56 BE	111	OPENSSL_free(pp);
0f113f3e	112	goto err;
9ad52c56	113	}
0f113f3e	114	}
25aaa98a RS	115	BUF_MEM_free(buf);
25aaa98a RS	116	return ret;
0f113f3e MC	117	err:
0f113f3e MC	118	BUF_MEM_free(buf);
25aaa98a RS	119	if (ret != NULL) {
	120	sk_OPENSSL_PSTRING_free(ret->data);
	121	OPENSSL_free(ret->index);
	122	OPENSSL_free(ret->qual);
	123	OPENSSL_free(ret);
	124	}
26a7d938	125	return NULL;
0f113f3e	126	}
d02b48c6	127
0f113f3e MC	128	OPENSSL_STRING TXT_DB_get_by_index(TXT_DB db, int idx,
	129	OPENSSL_STRING *value)
	130	{
	131	OPENSSL_STRING *ret;
	132	LHASH_OF(OPENSSL_STRING) *lh;
d02b48c6	133
0f113f3e MC	134	if (idx >= db->num_fields) {
0f113f3e MC	135	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
26a7d938	136	return NULL;
0f113f3e MC	137	}
	138	lh = db->index[idx];
	139	if (lh == NULL) {
	140	db->error = DB_ERROR_NO_INDEX;
26a7d938	141	return NULL;
0f113f3e MC	142	}
	143	ret = lh_OPENSSL_STRING_retrieve(lh, value);
	144	db->error = DB_ERROR_OK;
26a7d938	145	return ret;
0f113f3e	146	}
d02b48c6	147
0f113f3e	148	int TXT_DB_create_index(TXT_DB db, int field, int (qual) (OPENSSL_STRING *),
739a1eb1	149	OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
0f113f3e MC	150	{
0f113f3e MC	151	LHASH_OF(OPENSSL_STRING) *idx;
9ad52c56	152	OPENSSL_STRING r, k;
0f113f3e	153	int i, n;
d02b48c6	154
0f113f3e MC	155	if (field >= db->num_fields) {
0f113f3e MC	156	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
26a7d938	157	return 0;
0f113f3e MC	158	}
0f113f3e MC	159	/* FIXME: we lose type checking at this point */
739a1eb1	160	if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
0f113f3e	161	db->error = DB_ERROR_MALLOC;
26a7d938	162	return 0;
0f113f3e MC	163	}
	164	n = sk_OPENSSL_PSTRING_num(db->data);
	165	for (i = 0; i < n; i++) {
	166	r = sk_OPENSSL_PSTRING_value(db->data, i);
	167	if ((qual != NULL) && (qual(r) == 0))
	168	continue;
9ad52c56	169	if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
0f113f3e	170	db->error = DB_ERROR_INDEX_CLASH;
9ad52c56	171	db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
0f113f3e MC	172	db->arg2 = i;
0f113f3e MC	173	lh_OPENSSL_STRING_free(idx);
26a7d938	174	return 0;
0f113f3e	175	}
9ad52c56 BE	176	if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
	177	db->error = DB_ERROR_MALLOC;
	178	lh_OPENSSL_STRING_free(idx);
26a7d938	179	return 0;
9ad52c56	180	}
0f113f3e	181	}
25aaa98a	182	lh_OPENSSL_STRING_free(db->index[field]);
0f113f3e MC	183	db->index[field] = idx;
0f113f3e MC	184	db->qual[field] = qual;
208fb891	185	return 1;
0f113f3e	186	}
d02b48c6	187
6b691a5c	188	long TXT_DB_write(BIO out, TXT_DB db)
0f113f3e MC	189	{
	190	long i, j, n, nn, l, tot = 0;
	191	char p, pp, f;
	192	BUF_MEM *buf = NULL;
	193	long ret = -1;
d02b48c6	194
0f113f3e MC	195	if ((buf = BUF_MEM_new()) == NULL)
	196	goto err;
	197	n = sk_OPENSSL_PSTRING_num(db->data);
	198	nn = db->num_fields;
	199	for (i = 0; i < n; i++) {
	200	pp = sk_OPENSSL_PSTRING_value(db->data, i);
d02b48c6	201
0f113f3e MC	202	l = 0;
	203	for (j = 0; j < nn; j++) {
	204	if (pp[j] != NULL)
	205	l += strlen(pp[j]);
	206	}
	207	if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
	208	goto err;
d02b48c6	209
0f113f3e MC	210	p = buf->data;
	211	for (j = 0; j < nn; j++) {
	212	f = pp[j];
	213	if (f != NULL)
	214	for (;;) {
	215	if (*f == '\0')
	216	break;
	217	if (*f == '\t')
	218	*(p++) = '\\';
	219	(p++) = (f++);
	220	}
	221	*(p++) = '\t';
	222	}
	223	p[-1] = '\n';
	224	j = p - buf->data;
	225	if (BIO_write(out, buf->data, (int)j) != j)
	226	goto err;
	227	tot += j;
	228	}
	229	ret = tot;
	230	err:
25aaa98a	231	BUF_MEM_free(buf);
26a7d938	232	return ret;
0f113f3e	233	}
d02b48c6	234
c869da88	235	int TXT_DB_insert(TXT_DB db, OPENSSL_STRING row)
0f113f3e MC	236	{
	237	int i;
	238	OPENSSL_STRING *r;
d02b48c6	239
0f113f3e MC	240	for (i = 0; i < db->num_fields; i++) {
	241	if (db->index[i] != NULL) {
	242	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	243	continue;
	244	r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
	245	if (r != NULL) {
	246	db->error = DB_ERROR_INDEX_CLASH;
	247	db->arg1 = i;
	248	db->arg_row = r;
	249	goto err;
	250	}
	251	}
	252	}
d02b48c6	253
0f113f3e MC	254	for (i = 0; i < db->num_fields; i++) {
	255	if (db->index[i] != NULL) {
	256	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	257	continue;
	258	(void)lh_OPENSSL_STRING_insert(db->index[i], row);
9ad52c56 BE	259	if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
9ad52c56 BE	260	goto err1;
0f113f3e MC	261	}
0f113f3e MC	262	}
9ad52c56 BE	263	if (!sk_OPENSSL_PSTRING_push(db->data, row))
9ad52c56 BE	264	goto err1;
208fb891	265	return 1;
9ad52c56 BE	266
	267	err1:
	268	db->error = DB_ERROR_MALLOC;
	269	while (i-- > 0) {
	270	if (db->index[i] != NULL) {
	271	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	272	continue;
	273	(void)lh_OPENSSL_STRING_delete(db->index[i], row);
	274	}
	275	}
0f113f3e	276	err:
26a7d938	277	return 0;
0f113f3e	278	}
d02b48c6	279
6b691a5c	280	void TXT_DB_free(TXT_DB *db)
0f113f3e MC	281	{
	282	int i, n;
	283	char *p, max;
d02b48c6	284
e6e9170d RS	285	if (db == NULL)
e6e9170d RS	286	return;
0f113f3e MC	287	if (db->index != NULL) {
0f113f3e MC	288	for (i = db->num_fields - 1; i >= 0; i--)
25aaa98a	289	lh_OPENSSL_STRING_free(db->index[i]);
0f113f3e MC	290	OPENSSL_free(db->index);
0f113f3e MC	291	}
b548a1f1	292	OPENSSL_free(db->qual);
0f113f3e MC	293	if (db->data != NULL) {
	294	for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
	295	/*
	296	* check if any 'fields' have been allocated from outside of the
	297	* initial block
	298	*/
	299	p = sk_OPENSSL_PSTRING_value(db->data, i);
	300	max = p[db->num_fields]; /* last address */
	301	if (max == NULL) { /* new row */
	302	for (n = 0; n < db->num_fields; n++)
b548a1f1	303	OPENSSL_free(p[n]);
0f113f3e MC	304	} else {
0f113f3e MC	305	for (n = 0; n < db->num_fields; n++) {
b548a1f1	306	if (((p[n] < (char *)p) \|\| (p[n] > max)))
0f113f3e MC	307	OPENSSL_free(p[n]);
	308	}
	309	}
	310	OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
	311	}
	312	sk_OPENSSL_PSTRING_free(db->data);
	313	}
	314	OPENSSL_free(db);
	315	}